Evaluate the expression when a=7 and c=-2.
a-4c

Answers

Answer 1

Answer:

15 is the answer


Related Questions

Sydney says the slope of this line is 6/4
.

Deja says, "No, the slope of this line is 1.5"

Who is correct?
Sydney
Deja
Both
Neither

Answers

Answer:

Both

Step-by-step explanation:

Bc, 6/4 is equal to 1.5

Answer:

Both

Step-by-step explanation:

If you think about it, 6/4 is the same thing as 1.5, 6/4 is in the fraction form and 1.5 is in the decimal form. So, Deja and Sydney are both correct.

Hope this helps :D

hey does anyone know what the heck type of questions they ask on a DBA for math on module 05.11? it's my first DBA​

Answers

DBA stands for discussion based assignment. so you go to the meeting and talk about your strengths and weaknesses

(PLEASE HELP ME I BEG OF YOU)
Kevin and cannot eat on $135 a month salary there any commission for each sale they make and the ratio of Kevin and Kenneth commission is 3:4 if they sell Products worth $610 each in March and Kevin Owens at 12% commission how much did each of them??

A. Kenneth makes $232.60

B. Kevin makes $208.20

C. Kevin makes $73.20

D. They both make $440.00

E. Kenneth makes $219.60

Answers

Answer:

I think the asnwer A or B !!

Step-by-step explanation:

I think it’s A or B if u look at it

HELP HURRY HURRY HURFY HURRY HURRY

Answers

Answer:

3

Step-by-step explanation:

y=7-4

y=3

I think the answer is three..... buuuuuuuut

Solve for x in the diagram below. Will mark brainliest if your answer is correct!♡

Answers

I think it should be x=12.
The equation should be 6x-2+20°=90°

Solve the system of linear equations by using the elimination method:
4x+ y = 36
8x- y = 60

Answers

Answer:

(8,4)

Step-by-step explanation:

y and -y cancels out leaving you with "12x=96"

that simplifies to "x=8"

Then you substitute 8 into the "x" from either equation and y should equal 4

four friends go out for lunch. Each person orders 1 drink for $1.50 and 3 tacos. The total cost for all 4 people is $24. What is the price of one taco.

▪︎Let x represent the price of one taco. Which equation represents the problem?

1. 4(1.50+x) = 24
2. 4(1.50+3x) = 24
3. 1.50+3x = 24
4. 3(1.50+4x) = 24​

Answers

Answer:

The answer is B

Step-by-step explanation:

I just got it right on iready

Sidney skated for 1 1/10 hours last month and 8 7/10 hours this month. How many
hours did Sidney skate in all?

Answers

Answer:

the number of hours does sidney skate in all is 9.8 hours

Step-by-step explanation:

The computation of the number of hours does sidney skate in all is as follows:

= Last month + this month

[tex]= 1 \frac{1}{10} + 8 \frac{7}{10}\\\\= \frac{11}{10} + \frac{87}{10}\\\\= \frac{98}{10}[/tex]

= 9.8 hours

Hence, the number of hours does sidney skate in all is 9.8 hours

1.1. Which statement explains why the two systems of equations below have the
same solution?
A(6x + 8y = -10
2x - 5y = 12
B
8x + 3y = 2
12x + 16y = - 20
A. The first equation in B is the sum of the equations in A, while the other is obtained
by multiplying the second equation in A by 6.
B. The first equation in B is the sum of the equations in A, while the other is obtained
by multiplying the first equation in A by 2.
C. The equations in A are increased by 12 and -32 to get the equations in
D. The equations in A are multiplied by 2 and 4 to get the equations in B.

Answers

Answer:

Correct Answer is B. The first equation in B is the sum of the equations in A, while the other is obtained  by multiplying the first equation in A by 2.

Step-by-step explanation:

As given,

A : 6x + 8y = -10     .......equation (1)

     2x - 5y = 12      .......equation (2)

B : 8x + 3y = 2         .......equation (1)

  12x + 16y = - 20    .......equation (1)

Correct Answer is B. The first equation in B is the sum of the equations in A, while the other is obtained  by multiplying the first equation in A by 2.

Proof :

The first part says that ,

Sum of equation (1) of A and equation (2) of A = Equation (1) of B

Firstly , find the Sum of equation (1) of A and equation (2) of A

⇒6x + 8y + 2x - 5y = -10 + 12

⇒8x + 3y = 2

this is same as equation (1) of B

So, it satisfies the first part

The second part says that,

The equation (2) of B is obtained by multiplying the first equation in A by 2.

It means , if the equation (1) is multiplied by 2 = equation (2) of B

Firstly , if the equation (1) is multiplied by 2 , we get

2 ( 6x + 8y = -10 )

⇒ 2 ( 6x + 8y ) = 2 ( -10)

⇒ 12x + 16y = -20

this is same as equation (2) of B

So, it satisfies the second part.

(3 + 4q)(3) simplified

Answers

9+12q
Just multiply 3 by the numbers

What number replaces ☺ to make the sentence true? 1 + 3 + 4 + 6 + 6 + 8 + 9 + 11 = 4 × ☺.

Answers

Answer:

12

Step-by-step explanation:

Plssss I need help this question is really hard to find and I need this back quickly pls help me :(

Answers

Answer:

A) $402,500

Step-by-step explanation:

69100-57600= 11,500

11,500 x 35= 402,500

If you were dividing X6 + 4x3 + 2, how many O's would you
need when setting up the top row of your synthetic
division?

Answers

Answer:

how many O's u would use would be 4

Step-by-step explanation:

Q.6. The equation of the ellipse whose centre is at the origin and the x-axis, the major axis, which passes
through the points (-3, 1) and (2,-2) is
(A) 5x2 + 3y =32 (B) 3r? + 5y = 32 (C) 5x° - 3y2 = 32 (D) 3x* + 5y? + 32 = 0​

Answers

Answer:

Equation of the ellipse = 3x² + 5y² = 32

Step-by-step explanation:

Given:

The centre of the ellipse is at the origin and the X axis is the major axis

It passes through the points (-3, 1) and (2, -2)

To Find:

The equation of the ellipse

Solution:

The equation of an ellipse is given by,

[tex]\sf \dfrac{x^2}{a^2} +\dfrac{y^2}{b^2} =1[/tex]

Given that the ellipse passes through the point (-3, 1)

Hence,

[tex]\sf \dfrac{(-3)^2}{a^2} +\dfrac{1^2}{b^2} =1[/tex]

Cross multiplying we get,

9b² + a² = 1 ²× a²b²a²b² = 9b² + a²

Multiply by 4 on both sides,

4a²b² = 36b² + 4a²------(1)

Also by given the ellipse passes through the point (2, -2)

Substituting this,

[tex]\sf \dfrac{2^2}{a^2} +\dfrac{(-2)^2}{b^2} =1[/tex]

Cross multiply,

4b² + 4a² = 1 × a²b²a²b² = 4b² + 4a²-------(2)

Subtracting equations 2 and 1,

3a²b² = 32b²3a² = 32a² = 32/3----(3)

Substituting in 2,

32/3 × b² = 4b² + 4 × 32/332/3 b² = 4b² + 128/332/3 b² = (12b² + 128)/332b² = 12b² + 12820b² = 128b² = 128/20 = 32/5

Substituting the values in the equation for ellipse,

[tex]\sf \dfrac{x^2}{32/3} +\dfrac{y^2}{32/5} =1[/tex]

[tex]\sf \dfrac{3x^2}{32} +\dfrac{5y^2}{32} =1[/tex]

Multiplying whole equation by 32 we get,

3x² + 5y² = 32

Hence equation of the ellipse is 3x² + 5y² = 32

consider the expression 7 - 4y. Why would the co-efficient be -4 and not 4?

Answers

Because the answer to X is a negative number, and negative numbers are needed for negative answers

Answer: because it won’t make sense if it was 74y it has to have an equation or expression.

Step-by-step explanation: I’m not that smart and I have no friends on brainly but hope it helps and makes your day.

A donut shop has fixed costs of $32 per V day, and $2 per muffin sold. This formula can be represented by y = 2x + 32 , where x is the number of muffins sold, and y is the cost per day. Write this relationship in functional notation, as a function C(m) , where C(m) represents the cost for m muffins sold. Select the ordered pair that would represent this function C, given m. (32, (2)) 32 (m, 2m + 32) (2m + 32, m) (c(m), m)

Answers

I think it’s 57 I’m not sure

The day before the day before yesterday was two days after the day before my birthday.

Today is Thursday. On what day was my birthday?

Answers

the birthday would have been on saturday

Answer:

Your answer is indeed Saturday.

Step-by-step explanation:

The day before, (Wednesday) the day before, (Tuesday) yesterday, (Monday).

And then after the day before my Birthday, (sunday and then Saturday.)

PLEASE HELP ME IT IS AN EMERGENCY!!!!!!!!! I WILL MARK BRAINLLIEST FOR THE CORRECT ANSWER!!!!!!!!!!!!

When the original price and discounted prices are known, how can we find the percent markdown?

Answers

Step-by-step explanation:

The amount that you decrease the price by can be expressed as a percent of the selling price, known as the markdown rate.

When I multiply a - and +, the answer will be a?

Answers

the answer is negative (-)

Answer:

it will me a negative (-)

Simplify (a+b)(a^2-ab+b^2)

Answers

Answer: a^3 - b^3

Step-by-step explanation:

Help me pleaseeeeeee I put an atachment

Answers

What are the choices I only see A?

what are the first 5 terms of 30-n^2

Answers

Answer:

29, 26, 21, 14, 5

Step-by-step explanation:

To find the first 5 terms, substitute n = 1, 2, 3, 4, 5 into the n th term formula.

30 - 1² = 30 - 1 = 29

30 - 2² = 30 - 4 = 26

30 - 3² = 30 - 9 = 21

30 - 4² = 30 - 16 = 14

30 - 5² = 30 - 25 = 5

The first 5 terms are 29, 26, 21, 14, 5

a pair of shoes originally priced at $120 are on sale for 89.99 what percent discount was applied ?round to the nearest whole percent.

Answers

i believe it’s discounted 25%

Answer:

25%

Step-by-step explanation:

Divide 89.99 or 90 (since you are rounding) by 120, and you get .7499 or 75%.  You have 25% ($30) as the discount because 90 is 75% of $120.

if you can tell me the answer please do i need help besties​

Answers

Answer:

51

Step-by-step explanation:

8.5/1

and

x/6

cross multiply

51=x

Ruby bought a new car for £10625. She got a discount of 15% of the recommended retail
price of the car. How much money did Ruby save?

Answers

Answer:

15/100 x 10625

Saved: 1593.75 pounds

Solve the following:
A) a/5 + 3 = 8


B) 3b/7 - 1 = 5

Answers

The answer to A is 25.
The answer to B is 14!

A)

   a

———=8       :a=64

5+3  

Steps:Multiply both sides by 8

8a

     ———-=8  ·   8

      5+3

Simplify:a=64

B)

3b/7 - 1 = 5

Add 1 in both sides

3b/7 - 1 + 1 = 5 + 1

3b/7 = 6

Multiply both sides by 7 and then divide by 3.

3b/7 . 7/3 = 6 . 7/3

b = 2.7

b = 14

credits-https://brainly.com/question/12052195,math-way

16. In the figure below, lines A and B are parallel.

Answers

Answer:

the angle measurement is 75

Step-by-step explanation:

x-3y=7
2х-6у=12
Solve the following systems

Answers

Answer:

Step-by-step explanation:

this system doesnt have any solutions

if you multiply the first equation by 2 you will get

2x-6y=14

second equation is

2x-6y=12

the result will -12=14

no solutions

Write a rule for the sequence.

4, 8, 16, 32, . . .
A. Start with 4, and multiply by 2 repeatedly.
B. Start with 4, and add 8 repeatedly.
C. Start with 4, and add 2 repeatedly.
D. Start with 2, and multiply by 4 repeatedly.

Answers

Answer:

a

Step-by-step explanation:

4X2 is 8 8x2 is 16 16x2 is 32

Mrs.Giblin begins hiking at mile marker 25 on the Appalachian Trail and hikes 3 miles every hour. What is the slope?

Answers

Answer:

3 miles

Step-by-step explanation:

Slope is simply the change in position per unit rate. We could conclude that the steepness of the Applachian is the rate of change in position per unit time. Since the distance hiked on the Applachian is said to be 3 miles per hour, then we can conclude that the slope of the applachian is 3 miles

This is the change in miles / change in time.

Chang in miles = 3

Change in time = 1

Slope = 3/1

Slope = 3

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