Gena wants to estimate the quotient of –21.87 divided by 4.79. Which expression shows the estimate using front-end estimation?
-21 ÷ 4
-21 ÷ 5
-20 ÷ 4
-20 ÷ 5

Answer: all awnsers below

Step-by-step explanation:

This is a system of three equations with two unknowns, x and y. To solve it, we can use the method of elimination. First, we can eliminate y by subtracting the first equation from the second equation:

x^2-2y=3 - (x-2y=3) => x^2-x=0

Then we can factor the resulting equation and find the values of x:

x^2-x=0 => x(x-1)=0 => x=0 or x=1

Next, we can substitute these values of x into any of the original equations and find the corresponding values of y. For example, using the first equation:

x-2y=3 => 0-2y=3 => y=-3/2 when x=0 x-2y=3 => 1-2y=3 => y=-1 when x=1

Finally, we can substitute these values of x and y into the expression x2y-2xy2 and evaluate it:

x2y-2xy2 => 02(-3/2)-2(0)(-3/2)2 => 0 when x=0 and y=-3/2 x2y-2xy2 => 12(-1)-2(1)(-1)2 => -3 when x=1 and y=-1

Therefore, the value of x2y-2xy2 can be either 0 or -3 depending on the values of x and y.

Answer:

$75

Step-by-step explanation:

first find the unit price

30/10= $3 per cake

since you want to know how much it would cost for 25 cakes... multiple teh number of cakes by the price of each cake...

25*3= $75

Answer:

3/4

Step-by-step explanation:

same but simple

9/12÷3/3 = 3/4

if this helpful pleas give brainliest!

Answer:

3/4  ( \(\frac{3}{4}\) )

Step-by-step explanation:

\(\frac{9}{12}\) ÷ \(\frac{n}{n}\) = \(x\)

to find what to divide 9/12 by first, find their factors

9 - 1, 9, and 3

12 - 1, 12, 2, 6, 3, and 4

since both have 1 and 3 in common, divide by 3

so n (the value you're looking for) is 3

n = 3

\(\frac{9}{12}\) ÷ \(\frac{3}{3}\) = \(\frac{3}{4}\)

x = \(\frac{3}{4}\)

your answer is \(\frac{3}{4}\)

hope this helps:)

Answer:14

Step-by-step explanation:

Answer:

Mike had 14 to begin with.

Step-by-step explanation:

16 - 9 = 7

7 x 2 = 14

14 / 2 = 7

9 + 7 = 16

Answer:

c) 70%

Step-by-step explanation:

Customers who put in chocolate creamer: 6 + 8 = 14.

Total customers: 2 + 4 + 6 + 8 = 20.

Now divide the number of the customers who put in chocolate creamer by the number of total customers.  This equation would look like 14/20 = 0.7, or 70%.

Answer: A

Step-by-step explanation: when you plug 3 into both equations you get 5

Answer:

A

Step-by-step explanation:

to make this simple, plug the x-coordinate of each answer choice into x in each of the equations and plug the y-coordinate of each answer choice into y in each of the equations. if BOTH equations come out to be true, this is the solution.

ex:

y=3x-4

y=x+2

plug in (3,5)

5=3(3)-4 is correct

5=3+2 is correct

so, (3,5) is the solution.

Answer:

1/3

Step-by-step explanation:

From the given diagram of the spinner, we can infer that blue occupies 1/3 of the space and green occupies the remaining space.

Hence, the probability of spinning blue :

Answer:

1/3

Step-by-step explanation:

The blue one occupied one-third of the spinner, means when it got divided into three parts, the blue get one of them.

Answer:

-8x + 4y = 24 ----> 2x - y = -6

-7x + 7y = 28 ----> -x + y = 4

-------------

x = -2, y = 2

Answer:

58

Step-by-step explanation:

It is the middle point/dot

in the box with the line

Answer:

Step-by-step explanation:

Each Exterior angle = 180° - Interior angle.

(3m + 12)° = 180° - (5m − 16)°

Then solve algebraically:

\(3m+12=180-5m-16\)

\(3m+12=-5m+164\)

\(8m+12=164\)

\(8m=152\)

m = 19

The value of m will be 23.

What is mean by Triangle?

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

In triangle XYZ,

⇒ m ∠Z = (5m − 16)°

And, the exterior angle to ∠Z measures (3m + 12)°.

Now,

Since, The sum of angle and its exterior angle in a triangle will be 180°

Hence, We can formulate;

(5m − 16)° + (3m + 12)° = 180

Solve for m as;

5m - 16 + 3m + 12 = 180

8m - 4 = 180

8m = 180 + 4

8m = 184

m = 23

Thus, The value of m will be 23.

Learn more about the triangle visit:

https://brainly.com/question/17335144

#SPJ2

Answer:

Butter pecan: 14

Vanillia: 28

Step-by-step explanation:

Answer: 42%

Step-by-step explanation:

First step is to add all the known values ( 21, 25, 12). You get 58. Considering it is out of 100, all the known values are 58%

Next: Subtract 58 from 100. You get 42

Again, since it is out of 100, it is 42%

The answer is 42%

Hope this helped :D

Answer:

84°

Step-by-step explanation:

The circle has five central angles that together equal to 360°.

55° + 37° + 96° + 88° = 276°

Hence, to find the fifth central angle, we have to subtract 276° from 360°.

360° - 276° = 84°

The degree measure of the last central angle is 84°.

Hope this helps! :)

Step-by-step explanation:

You can choose one of the prices above to find the proportion.

\( \frac{2}{4} = \frac{2.30}{y} \\ 2 \times y = 2.30 \times 4 \\ y = 2.30 \times 2 \\ y = 4.60\)

Answer: I think its C

Step-by-step explanation:

Answer:

Step-by-step explanation:

The chance is 1/3!

hope this helps!

Answer: First blank is 15 then 28 then 25 in the last blank.

Step-by-step explanation:

On the left side column it is going up by 5 and the right column is going up by 7.

Answer:

A=15

Step-by-step explanation:

Answer:

The answer is A

Step-by-step explanation:

All you have to do is count the blocks

Answer:

161/70

Step-by-step explanation:

you have to find the lowest common multiple of 5,2 and 7 which is 70.then times the numerator by the multiple you have to times to get 70.eg 2×35 is 70 so multiply 1 by 35 which is 35.then add them all up.

35/70 + 56/70 + 70/70 = 161/70

hope this helps

Answer:

Step-by-step explanation:

Answer: (q + 10) - r

Step-by-step explanation:

Answer:

3.65 pounds

Step-by-step explanation:

6 + 2 1/2 (2.5) pounds of oranges = 8.5

4 3/4 = 4.75

8.5 - 4.75 = 3.65

Answer:           1/6

Step-by-step explanation: