Answer:
x = -1
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
3x + 4y = -3
x = -2y - 1
Step 2: Solve for y
Substitution
Substitute in x: 3(-2y - 1) + 4y = -3Distribute 3: -6y - 3 + 4y = -3Combine like terms: -2y - 3 = -3Isolate y term: -2y = 0Isolate y: y = 0Step 3: Solve for x
Define equation: x = -2y - 1Substitute in y: x = -2(0) - 1Multiply: x = 0 - 1Subtract: x = -1The numbers 32 and 12 are each rounded to the nearest ten and then multiplied to estimate the product. What is the
best estimate of 32 x 12 based on this method?
0 300
O 384
O 400
O 424
Mark this and retum
Save and Exit
Next
Submit
Answer:
300
Step-by-step explanation:
if you round 32 and 12 to the nearest it would be 30 an 10 so u multiply 30 times 10 too get 300
What is the solution to this equation?
3(n - 9) - 2011 + 4) = 6n2
Holly bought a magazine subscription for a year. She paid $27. Holly wanted to find the price, p, of the subscription each month. She created the model shown to help find this price. 27 р |р |р |р |р |р |р |р | Р | Р |р | p What was the price of the subscription each month? F $39.00 G $2.25 H $324.00 3 $22.50
Answer:
2.25 should be the right answer
Evaluate y = 2x + 1 when x= -1
Answer:
y = -1
Step-by-step explanation:
We Know:
y = 2x + 1, and x= -1.
Substitute:
y = 2(-1) + 1
Multiply:
2 * -1 = -2
y = -2 + 1
Add:
-2 + 1 = -1
So,
y = -1.
5 divide by 8 plus 9
Answer:
9.625
5 divided by 8= 0.625 + 9 = 9.625
Step-by-step explanation:
Answer:
9.625
Step-by-step explanation:
5/8=0.625, than add 9 to it, and have 9.625
The following is an example of what type of sequence? 3, 11, 19, 27, 35...
a geometric
C. ratio
b. arithmetic
ddifference
B....................
Answer:
b. Arithmetic .
Step-by-step explanation:
b because to get the next term you add 8.
5x-2x(x-1)=???????????????????????????????
Answer:
7x-2x"2
Step-by-step explanation:
Answer:
it is
7x-2x^2
Step-by-step explanation:
5x+2x-2x^2 = 7x-2x^2
justin wants to buy shorts that cost $35 and some shirts that are on sale for $22 each. He has $95 to spend. Write an inequality to find the number of shirts he can buy
What is the solution set for -4x - 10 <2?
Answer:
x>-3
Step-by-step explanation:
-4x<12
x>12/-4
help reertertewrtewrtetewtwretw5trt
Answer:
C is the answer
Hope I helped
Ana decides to start a lemonade stand. She goes to the store to buy her supplies, and those cost her $50. The city of Richmond also requires anna to pay a fee of $5 per day to set up lemonade stand at the park. Write the equation for her total cost (c) in terms of (d) days.
Answer:
[tex]c=5d+50[/tex]
Step-by-step explanation:
Given that:
Supplies of the lemonade bought at price = $50
Money paid per day to setup lemonade stand at the park = $5
To find:
Equation of her total cost.
Solution:
Let the number of days = [tex]d[/tex]
Per day cost of setting up the lemonade stand is given as $5.
If the number of days are [tex]d[/tex], then the cost of [tex]d[/tex] days can be found by multiplying the per day cost with the number of days.
Therefore, the expression for cost for [tex]d[/tex] number of days = [tex]\$5d[/tex]
Total cost for [tex]d[/tex] number of days can be found by adding the cost of supplies and cost for [tex]d[/tex] number of days for setting up the stand:
[tex]c=5d+50[/tex]
what is the value of tan360°?
Answer:
tan360°= 0
I hope this helps you
Answer:
please mark as brainliest
Step-by-step explanation:
tan360°
= cot (90°-360°) = cot -270°
-tan360°
= tan (-360°) = -tan 360°
= cot (90°+360°) = cot 450°
= tan (180°-360°) = tan -180°
true or false ? losing time
Answer:
FalseStep-by-step explanation:
[tex]--------------------------------------------[/tex]
The order in which we complete an operation is NOT optional. This is because if we do addition or subtraction first, ( which is usually at the end of PEMDAS ) the answer ( even if it looks right ) will always be wrong. Always remember, if you don't do the regular PEMDAS, it will always be wrong.
[tex]--------------------------------------------[/tex]
Hope this helps! <3
[tex]--------------------------------------------[/tex]
Sammi believes that 0.3 repeating is a rational number. Is Sammi correct?
Answer: Yes, Sammi is correct because although it is repeating, it is expressible as a ratio of 2 integers.
I hope this helps!
Step-by-step explanation:
12 is 20% of what number?
Answer:
60
Step-by-step explanation:
can someone help? which triangle is the same as ABC?
someone answer please:)
I think its saying to find out what a means
GIVING BRAINLIEST ONCE AGAIN
Answer:
45
Step-by-step explanation:
divide 25 by 5 to see how they got that, which is 5. then multiply 9 by 5 bc you have to do the same thing, which is 45.
Answer:
5:9 = 25:45
Step-by-step explanation:
Easy question? Please help I’ll give brainliest! :( Please provide small explanation like instructions it’s okay if not though
Answer: Ok so what i'v got for this one is that i averaged up all three numbers and i got an average of about 85%. Now you have to put in a fourth number which will actually be another 80% i believe
Step-by-step explanation: add up all 3 divide them all by the numbers then once your done with that plug in the 80% and see what your answer will be.
Determine the equation of a circle with a center at (–4, 0) that passes through the point (–2, 1) by following the steps below. Use the distance formula to determine the radius: d = StartRoot (x 2 minus x 1) squared + (y 2 minus y 1) squared EndRoot Substitute the known values into the standard form: (x – h)² + (y – k)² = r². What is the equation of a circle with a center at (–4, 0) that passes through the point (–2, 1)? x2 + (y + 4)² = StartRoot 5 EndRoot (x – 1)² + (y + 2)² = 5 (x + 4)² + y² = 5 (x + 2)² + (y – 1)² = StartRoot 5 EndRoot
Answer:
Radius length: √5
Standard Form (Equation): (x + 4)^2 + y^2 = 5
Step-by-step explanation:
First we will determine the radius;
Center: (-4, 0)
Point on Circumference: (-2, 1)
d = √(-2 - (-4))^2 + (1 - 0)^2 = √(2)^2 + (1)^2
= √4 + 1 = √5
Therefore the radius is of length √5
Now the equation of a circle is in the form ((x - h)^2 + (y - k)^2) = r^2. The center is in the form (h,k) and r is the radius. Given this our equation would be (x - (-4))^2 + (y - 0)^2 = (√5)^2, or [simplified] (x + 4)^2 + y^2 = 5.
Answer:
its C. (x + 4)² + y² = 5
Step-by-step explanation:
edge
If a temperature is 2 °C and falls by 7 °C, what is the new temperature?
Answer:
-5 degrees C
2 degrees C minus 7 degrees C
hope this helps you
which of these is a composite number? 4 2 6 8
Step-by-step explanation:
4,6 and 8 are composite numbers
and 2 is an prime number
hope it helpful
Answer:
4 , 6 , & 8 are composite numbers
Add.
92 +53
Enter the correct answer in the box.
Answer:
145
Step-by-step explanation:
Review the function equation below.
y = −9x + 3
Enter the y-intercept of the function in the box.
A bag contains 4 orange marbles, 2 yellow marbles, and 9 red marbles. Which of the following best describes the probability of choosing a red marble from the bag?
Likely
As likely as not
Unlikely
Impossible
Answer:
very likely
Step-by-step explanation:
Most of the marbles in the bag are red so that's why it's likely.
Answer: The answer would be likely
Step-by-step explanation:
Factorise the expression 6x^2-13x+6 and hence solve the equation 6x^2-13x+6=0
Answer:
Part A
The factored form of the expression, 6·x² - 13·x + 6 is (2·x - 3) × (3·x - 2)
Part B
The solution of the equation 6·x² - 13·x + 6 = 0 are x = 3/2 or x = 2/3
Step-by-step explanation:
Part A
The given expression to factorize is 6·x² - 13·x + 6, which can be written as follows;
6·x² - 13·x + 6 = 6·x² - 4·x - 9·x + 6
The 13·x is split at - 4·x - 9·x
6·x² - 4·x - 9·x + 6
2·x·(3·x -2) - 3·(3·x - 2)
Bringing out the common factor (3·x - 2) gives;
(2·x - 3) × (3·x - 2)
Therefore, the expression 6·x² - 13·x + 6 in factored form is (2·x - 3) × (3·x - 2)
Part B
Solving the equation, 6·x² - 13·x + 6 = 0, therefore gives;
6·x² - 13·x + 6 = (2·x - 3) × (3·x - 2) = 0
Therefore, either (2·x - 3) = 0 and x = 3/2 or (3·x - 2) = 0 and x = 2/3
From which we have 6·x² - 13·x + 6 = 0 when x = 3/2 or 2/3 and x = 3/2 or x = 2/3 are the solution of the equation 6·x² - 13·x + 6 = 0.
What value of x makes the equation below true? -26 = 60 + x
Answer:
x = -86
Step-by-step explanation:
60+ (-86)= -26
Answer:
x = -86
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define Equation
-26 = 60 + x
Step 2: Solve for x
Subtract 60 on both sides: -86 = xRewrite: x = -86Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: -26 = 60 - 86Subtract: -26 = -26Here we see that -26 does indeed equal -26.
∴ x = -86 is the solution to the equation.
–2.5 + (–3.5)
Which number line shows the sum?
A.
B.
C.
D.
Answer:
The correct answer is C.
Step-by-step explanation:
Because –2.5 + (–3.5) = -6, it means that the red line goes from -6 to -3 1/2 to 0. so that gives us Answer choice C
As a cold front moved in, the temperature dropped 3 degrees each hour for 6 hours. What was the total temperature change after the 6 hours?
Answer:18°
Step-by-step explanation:
6x3=18
Write an equation of the line that passes through the points (0, –5) and (4, 7).