Mathematics College

The first equation in the system of equations that models this situation is x + y = 70, where x represents the number of 2-point questions and y represents the number of 4-point questions. What is the other equation in the system? Enter the correct answer in the box. Substitute numerical values in the expression for A, B, and C.

Answers

Answer 1

Answer: (2x+4y=150) this is right

swear

mama

this

correct

Answer 2

Answer:

they were right

Step-by-step explanation:

The first equation represents the number of questions on the test. So, the second equation represents how much the questions are worth.

There are x of the 2-point questions, which have a total value of 2x points.

There are y of the 4-point questions, which have a total value of 4y points.

The test has an overall value of 150 points, so the second equation is 2x + 4y = 150.

Related Questions

Mr. kim travels 32 weeks a year for work. He is home the other 20 weeks. There are 7 days in a week. Which of the following basic facts can Mr. Kim use to help find the number of days he is home.
A. 2x7
B. 3x7
C. 32+7
D. 20+7

Answers

Answer:20 * 7 (20 times/ multiplied by 7)

Step-by-step explanation: home is 20weeks with 7 days each. So, 20 times 7

In other words

Count seven days 20 times

PLEASE HELP EASY MATH PLEASE ASAP
What is the Ax + By =C form (where A > 0, and A, B, and C are integers with
factors) of the equation of the line that passes through (-4,9) with a slope of -3/2

Answers

Answer:

Step-by-step explanation:

I don't really know what your question is asking for but I can tell you there's a quadratic formula that solves for x-ints. There's a quadratic equation which is Ax + bx + c = 0.

help me pleaseeeeee

Answers

Answer:

the 4th one, 5 7/9

Step-by-step explanation:

Answer:

–5 7/9

Step-by-step explanation:

Follow my account ^^

(0.5x - 0.6) + (0.75x - 0.1)

Answers

The answer is 0.05(25x-14) = fraction form 1/20 •(25x-14)

Answer:

1.25x-0.7

Step-by-step explanation:

0.5x−0.6+0.75x−0.1

=0.5x+−0.6+0.75x+−0.1 Combine Like Terms:

=0.5x+−0.6+0.75x+−0.1

=(0.5x+0.75x)+(−0.6+−0.1)

=1.25x+−0.7

Answer:

=1.25x−0.7

Please help with all three

Answers

Answer:

1)1/3 x3=9

2)The didvsion equation is the smae because you would get the same answer.

3) it would be 9

Step-by-step explanation:

Complete the number sentence.

0.30 ÷ 0.06

Answers

Answer:

Step-by-step explanation:

Answer:

0.30 ÷ 0.06 = 5

Step-by-step explanation:

A teacher administers a standardized math test to his class of 75 students. The mean score (out of 300 possible points) is 235. From previous studies, you know the population standard deviation is 28. Using the sample data given, calculate a 95% confidence interval for the population mean.

Answers

Answer:

(228.663 ; 241.337)

Step-by-step explanation:

Given that:

Mean (m) = 235

Standard deviation (s) = 28

α = 95%

Zcritical at 95% = 1.96

Sample size (n) = 75

The confidence interval of the population mean can be obtained using the relation :

Mean ± Error

Error = Zcritical * (s/sqrt(n))

Error = 1.96 * (28/sqrt(75))

Error = 1.96 * 3.2331615

Error = 6.33699654

Error = 6.337

Lower boundary = 235 - 6.337 = 228.663

Upper boundary = 235 + 6.337 = 241.337

(228.663 ; 241.337)

predict whether the product is greater than, less than, or equal to 7/10. What is the product? 10/10 x 7/ 10

Answers

Answer:

7/10 *10/10 is 70/100 or 7/10 so equal

Step-by-step explanation:

the product is 7/10.

it is 10/10which simplifies to 1(divide by 10)

so it wouldn't change

Hope this helsp zpl hit hte crown :D

The sum of two numbers is negative thirty-two. One number is two less than the other.

Call the numbers m and n.

Answers

Answer:

-15 and -17

Step-by-step explanation:

17 divided by 1/3 pls help me

Answers

Answer:

Step-by-step explanation:

just the denominator with the numerator

9 by the power of 2 x 2-4 by the power of 2

I AM IN THE NEED OF HELP ASAP THIS QUESTION IVE BEEN STUCK ON THIS ONE FOR HOURS!!!!

Answers

Answer:

Step-by-step explanation:

Suppose that a population parameter is 0.3 and many samples are taken from the population. If the size of each sample is 40, what is the standard error of the distribution of sample proportions?

A. 0.095
B. 0.055
C. 0.072
D. 0.032

Answers

Answer:

0.072

Step-by-step explanation:

A P E X

Helppppppppppp plzzz

Answers

Answer:

Step-by-step explanation:

hope this helps......

Write equations in slope-intercept form for three different lines that intersect at (-2,3).

Answers

Answer:

y = 3/2x + 6

y = -1/4x + 5/2

y = -x + 1

Step-by-step explanation:

I used the point (-2, 3) with a variety of slopes (3/2, -1/4, -1) and plugged the point and slope into y=mx+b to get 'b' (the y-intercept).

PART 2
HELPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

54 hours

Step-by-step explanation:

So, first of all subtract the money she has from the total amount.

540-60=480 She still needs $480. So divide this number by the amount she gets in an hour. (9)

480/9 =53.33333 since she can't work half hours, i rounded up.

Help anyone I’ll appreciate it thank you

Answers

Answer:

150

Step-by-step explanation:

the total angle of a flat line is 180

since one side is 30 180-30 is 150

Find the value of x

Answers

Answer:

x=39 degrees

Step-by-step explanation:

x + 31 equals 2x - 8 because both pair of expressions must add up to 180

which ordered pair is the solution set of -6x+2y>6

Answers

Answer:

C-(-3,4)

Step-by-step explanation:

The shortest route from London to York is 200 miles.
A lorry is expected to take 4 hours to travel this route.
The lorry actually travels by a different route which increases the distance by 20%, but it still arrives in 4 hours.
By how many more mph than the expected speed does the lorry travel?

Answers

Answer: The lorry is traveling 10 mph over the expected speed.

Step-by-step explanation:

If 200 miles takes 4 hours, the speed is 200mi/4hr which is 50 mph.

If the distance is increased by 20%, the distance is 240 miles.

240mi/4hr = 60mph

The difference is 10mph

Which shows two possible values for a number represented by the point?

A number line going from 0 to 1. There are 4 equal spaces between 0 and 1. A point is half-way between 0 and 1.
StartFraction 2 Over 4 EndFraction and One-third
StartFraction 2 Over 4 EndFraction and One-half
2 and StartFraction 2 Over 4 EndFraction
2 and One-half pls help im timed

Answers

Answer:

B-2/4 and 1/2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Here are the monthly charges for Jo's mobile phone
Monthly charge 616
150 free minutes, then 18p per minute
150 free texte, then 18p per text
During one month, Jo makes 170 minutes of calls and sends 182 texte,
Work out the total charge for the month

Answers

Answer:

The correct answer is - 625.36.

Step-by-step explanation:

Given:

Fixed mothly plan - 616

free minutes - 150

Used minutes - 170

Free text - 150

Used text - 182

Charging amount over free limit - 18p

Solution:

Number of minutes over the limit - 170 - 150 = 20

Number of text over the limit - 182 - 150 = 32

So the extra amount that will be add to the monthly charge would be -

(20*0.18) +(32*0.18)

and the total charge of the month would be -

= 616+(20*0.18) +(32*0.18)

= 616+3.60+5.76

= 625.36

Thus, the correct answer would be - 625.36

anyone up that can help me

Answers

Answer:

Step-by-step explanation:

reflection

What is the probability of picking a purple marble and spinning green?

Answers

two out of how many there is.

please help meeee the blue line is what I have to find please show your work

Answers

Answer:

So we have to satisfy the equation so let us simplifyLet the empty space be n N-16+4n+9+1= 10n-6 N-4n=10nn=14n So the missing value is 14N to statify the equation

Let the blue line equal to n

So now the equation is n-16+4n+10=10n-6

Collect like terms

5n-6= 10n-6

Move 6 to the other side as a positive

5n=10n

Move 10n to the other side as a negative

5n-10n=0

-5n=0

Divide both sides by -5

So, n is equal to 0

x-axis =____
y-axis =____
y= x ____
y= -x____

Answers

Answer:

x-axis = (2, -3)

y-axis = (-2, 3)

y = x (3, 2)

y= -x (-3, -2)

Step-by-step explanation:

x-axis = (2, -3) The point is below the x-axis.

y-axis = (-2, 3) The point is left of the y-axis

y = x (3, 2) Plot the line y = x. The point is on the other side of the line.

y= -x (-3, -2) Plot the line y = -x. The point is on the other side of the line.

27/9 = 18/ x

Please select the best answer from the choices provided.

A: x = 9
B: x = 8
C: x = 6
D: x = 3

Answers

Answer:

x= 6 answer is correct answer

Answer:

C. x=6

Step-by-step explanation:

Hope this helped have an amazing day!

Does anyone know the answer?

Answers

a. True
b. True
c. False
d. True
e. True
f. True
g. False
h. False
i. False
j. False
k. (I can’t see the whole picture)
l. ( same with this one)

The length of the base of an isosceles triangle is x. The length of a leg is 3x - 4. The perimeter of the triangle is 76. Find x.
X=

Answers

Answer:

Step-by-step explanation:

Hi!

We're given that the perimeter is 76. A triangle's perimeter is given by the sum of all of the sides. So, we'll find the lengths of the sides of the triangle and add them.

This is an isosceles triangle. The legs of an isosceles triangle are equal. In this problem, we're given the length of one leg: 3x-4. That means that the length of the other leg is also 3x-4. Now, the last side of the triangle is x ("base is x).

2(3x-4) + x = 76

6x-8+x=76

7x-8=76

7x=84

x=12

Let's check our answer.

3(12) - 4 =36-4 = 32

32 times 2 = 64 +12 =76

Correct!

There are 5 quarts left in the fridge. How many liters are in the fridge? (1 quart = 0.946 liters).

Answers

0.946 x 5 = 4.73 litres

Translate the sentence into an inequality.
A number c increased by 3 is greater than -27.

Answers

Answer:

Inequality: c + 3 > -27

Other Questions

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