Solve the following system of equations.
- 7x-9y= 10
3x – 2y = 25

Answers

Answer 1

Answer: first one x= -9/7y+-10/7, second x=2/3y+25/3

1. Step-by-step explanation:

add 9y to both sides -7x-9y+9y=10+9y

divide both sides by -7. -7x/-7=9y+10/-7

2. Add 2y to both sides. 3x-2y+2y=25+2y

divide both sides by 3. 3x/3=2y=25/3


Related Questions

HELPPPPPPP BRAINLIESTTT

Answers

Answer:

7n+5 would get u the perimeter because you can add like terms together so I added all the ns to get that- hope that helps you ❣️

Step-by-step explanation:

How would I solve this? I tried and I got a reallly crazy number... I think I messed up somewhere. The question is... Jack and Mark work together on a job, but not equal hours. Mark gets paid $11 per hour and Jack gets paid $10 per hour. Together they worked 58 hours and earn a total of $601. How many hours did each one work?

I made these equations.
m+j=58
11m+10j
The first one I rearranged to m=58-j.

Answers

37 x 10 = 370
21 x 11 = 231

Mark worked 21 Hours, Jack worked 37 Hours.

Answer:

Jack earns $37

Mark earns $21

Step-by-step explanation:

m + j = 58

11m + 10j = 601

j = 58 - m

11m + 10(58 - m) = 601

11m + 580 - 10m = 601

1m = 601 - 580

m = 21

j = 58 - m

j = 58 - 21

j = 37

Ellen needs to make b batches of blueberry scones this weekend for her family's brunch party. She needs 2 cartons of blueberries for each batch, and each carton costs $4. Pick all the expressions that represent how much Ellen will spend on blueberries.

Answers

Answer:

Ellen will spend

$4(2b) on blueberries

Where b = number of batches of Blueberry scones she wants to make

Step-by-step explanation:

From the above question:.

Ellen needs to make b batches of blueberry scones this weekend for her family's brunch party.

Since she needs 2 cartons of blueberries for each batch, and each carton costs $4

1 batch = 2 cartons of blueberries

b batches =

Cross Multiply

b × 2 cartons

= 2b cartons of blueberries.

We also know that:

1 carton blueberries = $4

2b cartons of blueberries = x

Cross Multiply

x = 2b × $4

Therefore, Ellen will spend :

$4(2b) on blueberries

How many 8ths of an inch are there in 3/4

Answers

Answer:One-half names the same number as two-quarter or as three sixths  or as four-eights . Three-fourths  is equal to six-eighths because they are different ways of expressing the same number.

Step-by-step explanation:

During the first week of a certain month, a computer store sells 11 computers. A sale begins on the second week of the week and during the second week the computer store sells 17 computers. What was the percent increase in sales from the first week of the month to the second week of the month ?

Answers

Answer:

The percentage increase in sales is 54.45%

Step-by-step explanation:

Here, we want to calculate the percentage increase

mathematically the increase in sales is 17-11 = 6

The percentage increase is ;

6/11 * 100% = 54.45%

Zeke oversees a website for nutritional information on fast food. During its first year, the number of times the website was visited had
net change of +55. During each subsequent month, starting in the next year, the number of visits increased by 320. He wants to find
out how many visits his website will get afterx months assuming this rate continues
Zeke thinks that the website will have 7,500 visits in less than 2 years
Which statements about this situation are true? Select ALL that apply.
A
The expression 320x + 55 can be used to represent this situation,
The expression that can be used to represent the situation will have a positive rate of change of 55 and a constant of
320

Answers

Answer: 320x + 55

Step-by-step explanation:

The statements about this situation that are true include:

The expression 320x + 55 can be used to represent this situation.The expression that can be used to represent the situation will have a positive rate of change of 55 and a constant of 320.

Since the number of times the website was visited had a net change of +55 and during each subsequent month, starting in the next year, the number of visits increased by 320. The expression to solve this will be:

= 320(x) + 55

= 320x + 55

where, x = number of months.

Read related link on:

https://brainly.com/question/19737487

What percentage is 388 ??

Answers

Answer: 77.6%

Step-by-step explanation: By using the basic calculation of percentage strategy, it's 77.6%

PLEASE HELP DHDDFCJFUIKY
Danica has purchased 36 roses and 42 tulips for her wedding ceremony. She wants to arrange the flowers into vases so that there is an equal number of roses and tulips in every vase. What is the greatest number of vases she can arrange?

Answers

Answer:

36

Step-by-step explanation:

What is m∠ABC?


A. m∠ABC = 60°

B. m∠ABC = 67°

C. m∠ABC = 120°

D. m∠ABC = 127°


Brainlist for the correct answer

Answers

Answer:

The answer is D I'm not sure

Answer:

127 degrees

Step-by-step explanation:

When you add up all three angles of a triangle, the sum will always be 180 degrees. Just add up the two known angles and that will equal Angle ABC because a straight line also equals 180 degrees

GIVING BRAINLIEST PLLZ SHOW WORK

Answers

Answer:

17) m(slope) = -5

18) m = 1/3

19) m = -1/5

20) m = undefined

21) m = 1/4

22) m = -2/3

23) m = -1

24) m = -1

25) m = -2/3

26) m = -5/2

If Square ABCD is dilated by a scale factor of two about the center of the square, dilated line E'F' will?

Answers

EF passes through the center point. Let's call the center point G All lines that pass through the center of dilation will still pass through the center after the dilation. So what this means is that segment E'F' will also pass through point G In fact, segment E'F' will lay entirely on line EF

Geometry
Please help !
Would the answer be z is 64?

Answers

I’m pretty sure it would be 66 because you want the inside of the triangle to be 130 and 28+36+66=130

The drama club has $4000 to spend on their winter performance. They have already
spent $1500 on the set, and programs cost $1.75 each.
Thetinequality 1500 + 1.75x<=4000 can be used to determine the number
of programs, x, that can be ordered. Which statement about the number of
programs that can be ordered is true?

The drama club can purchase at least 1.428 programs

The drama club can purchase at most 1.428 programs

The drama club can purchase 1,429 programs

The drama club can purchase 4000 programs

Answers

Answer:

The drama club can purchase 1429 programs

Step-by-step explanation:

Determine whether or not the equation shows a proportional relationship. If it does, identify the unit rate (constant of proportionality).
y =25x, a = 5x + 5, m = 105.25n

Answers

Answer:

y = 25·x shows a proportional relationship

a = 5·x + 5 does not show a proportional relationship

m = 105.25·n shows a proportional relationship

Step-by-step explanation:

An equation that shows a proportional relationship is of the form, y = kx

Where;

k = The constant of proportionality = y/x

Therefore, the equation, y = 25·x shows a proportional relationship

The constant of proportionality = k = y/x = 25

Similarly, the equation m = 105.25·n shows a proportional relationship

The constant of proportionality = k = m/n = 105.25

When the equation shows a proportional relationship, the graph of the equation passes through the origin, therefore, the equation of the form, y = m·x + c, where c = the y-intercept > 0, the equation does not show a proportional relationship

The equation a = 5·x + 5, which is of the form, y = m·x + c, with c = 5 > 0, therefore, does not show a proportional relationship.

Therefore;

y = 25·x shows a proportional relationship

m = 105.25·n shows a proportional relationship

a = 5·x + 5 does not show a proportional relationship.

Which situation can the integer -4 ​represent?
Choose the correct answer below.
(A.) walking up 4 stairs
(B.) earning 4 dollars
(C.) gaining 4 yards
(D.) Walking down 4 stairs

Answers

Answer:

D

Step-by-step explanation:

because it's going down by 4 not going up so it would represent -4

- x+4y = 32
3х + 3y = 54

Answers

Look at the attachment

An order is written for 1200 adult weight 164 pounds and is 5/9 all with a BSA of 1.9 m to the physician ordered o n c o v i n 2 mg / M2 for chemotherapy treatment of a malignant tumor. Oncovin is supplied as 1 mg/ml. What volume should the patient receive per dose?

Answers

Answer:

The volume per dose that the patient should receive is 3.8 ml

Step-by-step explanation:

The physician ordered oncovin 2 mg/m² for chemotherapy treatment of a malignant tumor.

The adult's BSA (Body surface area) = 1.9m²

Hence, the amount of oncovin needed based on his body weight is:

2mg/1 m² = x mg/1.9m²

Cross Multiply

x mg = 2mg × 1.9

x = 3.8mg

We are told , oncovin is supplied:1 mg/ml

Hence:

This means

1 mg = 1 ml

3.8 mg = x ml

Cross Multiply

x ml = 3.8 ml

The volume per dose that the patient should receive is 3.8 ml

Owen made exactly 72% of his free throws during the first half of the basketball season, and he made six free throws during the second half of the season. For the entire season he made exactly 60% of his free throws. What is the fewest possible number of free throws Owen could have attempted during the second half of the season?

Answers

Answer:

The fewest possible number of free throws Owen attempted is 15 throws

Step-by-step explanation:

From the first half,

72% = 72/100 = 18/25, reduced to its simplest ratio.

It means that he made at least 18 free throws in the first half of the season.

From the second half,

Let x be the fewest possible outcome of free throws, and the sum of total is 60% = 60/100 = 0.6

Considering the 6 free throws during the second half of the season,

(18+6)/(25+x) = 0.6

24/(25+x) = 0.6

Solving for x,

24 = 0.6(25+x)

24 = 15+0.6x

24-15 = 0.6x

9 = 0.6x

x = 9/0.6 = 15

x = 15 free throws

The fewest possible number of free throws Owen attempted is 15 throws

School lunches cost $224.75 for 15.5 weeks. About how much would the lunches cost per week?

Answers

$224.75 divided by 15.5 = 14.5 i used a calculator

Answer:$14.50

Step-by-step explanation:

Divide 224.75 by 15.5 and you will get the cost for per week.

A family restaurant chain wants to test the market for a new menu item: a grilled chicken sandwich with chipotle salsa. They are interested in both how to market the item and the right price to charge for it. They decide to offer the sandwich at 60 different restaurants in the chain, using two different descriptions on the menu. Half the restaurants' menus will emphasize "healthy eating" and half will emphasize "value." These two groups of restaurants will be further divided in three groups, each charging either a High, Medium, or Low price for the sandwich. After a month, they will measure what proportion of customers order the new sandwich.

Answers

Answer:

Experimental units, factors & treatments in experiment.

Step-by-step explanation:

Experimental Units are the 60 restaurants.

Factors are the : Menu description & price

Treatments in experimental design : Healthy Low Price, Healthy Medium Price, Healthy High price & Value low price, Value medium price, Value high price.

Find the values of X and Y

Answers

Answer:

x=90, angle bisector theorem

y=43,

90+47+y=180

=137+y=180

y=43

I’ll give BRAINLIEST just pls help :(

Answers

Answer:

September

December

May and December

Step-by-step explanation:

I am not sure about the last one

The price of a ticket to a show was $18.30 after a 25% discount. What was the original price?

Answers

Answer:

24.40

Step-by-step explanation:

divide this by 3, which gets you 6.10, or 1/4 of the total, then add that onto the 18.30 and boom

A poetry class won a $325 prize. The 13 students in the class share the prize equally. How many dollars does each student receive(If you can please show your work!)

Answers

You would calculate 325 divided by 13. The answer is 25. The student will split the money into $25.

what is the square root of 625

Answers

Answer:

25

Step-by-step explanation:

25 times 25 =625

Answer:

25

Step-by-step explanation:

for questions like these it is best to use a calculator

if you use a TI 84 calculator then press the blue button that says "2nd" and

then on that same column there will be a button that says [tex]x^{2}[/tex]

press these buttons then enter the number that you want to find the square root of

then press "enter" and your answer will be there

factor with distributive property (no variables) 55 + 35

Answers

55 + 35 Factorized ↓

              5(11 + 7)

I hope this helps u

God bless

Answer

5(11+7)

1. Find the greatest common factor of 55 and 35.

The greatest common factor of 55 and 35 is 5.

2. Divide each number (in the expression) by the common factor

55/5=11

35/5=7

3. Write the factorized expression

So you multiply 5 times 11 and 5 times 7.

So when distributing, you would multiply the number outside of the parentheses by each of the numbers in the parentheses.

The number outside is 5 and the numbers inside are 11 and 7.

So the expression is 5(11+7)

5*11=55

5*7=35

4. Check to see if you get the same answer (optional)

55+35=90

5(11+7)=5(18)=90

I need the answers ASAP ? No rocky ?

Answers

Answer:(-1,1) - (4,4)

Step-by-step explanation:

ez

HELP I WILL GIVE MANY THX AND BRAINLIST (it says high school but im in middle)
what is 5⁴ in expanded form

Answers

Answer:

5 * 5 * 5 * 5

Step-by-step explanation:

=625

The sum of two numbers is 40. One number is 4 times as large as the other. What are the numbers? Larger number: Smaller number:

Answers

Answer:

The answer is 8

Step-by-step explanation:

S×4+s=40

s×5=40

40÷5=8

Have a great day:)

Find the missing side length
Round to the nearest tenth
The answer is 15.6
Please show all steps ty

Answers

Answer:

x ≈ 15.6

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Trigonometry

[Right Triangles Only] SOHCAHTOA[Right Triangles Only] cos∅ = adjacent over hypotenuse

Step-by-step explanation:

Step 1: Identify Variables

Angle Measure = 60°

Adjacent Leg = 9

Opposite Leg = x

Step 2: Solve for x

Substitute [tangent]:                    tan60° = x/9Isolate x:                                       9tan60° = xRewrite:                                        x = 9tan60°Evaluate:                                       x = 15.5885Round:                                          x ≈ 15.6
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