Which expression could be used to determine the product of -4 and 342
o(-4)(3)(-4)
x (
0 (-4)(3) + (-4)
0 %)(-4)=(3 ()
(3)(-4) + (3)

Answer:

To get to system B the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 4. The solution to system B is the same as the solution to system A.

Step-by-step explanation:

A system of equations and it’s solution are given below.

System A.

x-y=3

-2x+4y=-2

Solution: (5,2)

Complete the sentences to explain what steps were followed to option the system of equations below.

System B

x-y=3

2x=10

To get to system B the (first/second) equation in system A was replaced by the sum of that equation and the (first/second) equation multiplied by (4....2.....-3) . The solution to system B (is/ is not) the same as the solution to system A.

Solution:

To get system B:

First write the first equation in system A. x - y = 3

Multiply the second equation in system A by 4 and add to the first equation in system A to get:

2x = 10

x = 10/2 = 5

Put x = 5 in x - y = 3

5 - y = 3

y = 5 - 3 =2

The solution to system B is the sam as that of system A

To get to system B the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 4. The solution to system B is the same as the solution to system A.

This question makes exactly no sense.

However, if yall want the answer to

Question:
System A
x-y= 7       -3x+9y = -39   Solutions (4,-3)

Complete the sentences to explain what steps were followed to obtain the system of equations below

x-y= 7    6y= -18

Solution:

To get system B, the second equation in system A was replaced by the sum of that equation and 3 times the first equation. The solution to system B is the same as the solution to system A.

Answer: International Date Line

Answer:

2x + 1

-----------

x^2 + 1

Step-by-step explanation:

i plugged it into mathw ay :) its a great site that solves ur equations and any math questions

Answer:

2,315 coffee beans.

Step-by-step explanation:

1 tub = 1,000

1 large bag= 100

1 small bag = 10

Raoul has:

- 2 tubs

- 3 large bags

- 1 small bag

- 5 beans on the counter

2 x 1,000 = 2,000

3 x 100 = 300

10 + 5 = 15

then, add all of the (bold) numbers together.

2,000 + 300= 2,300

2,300 + 15 = 2,315

Raoul has 2,315 beans altogether.

Answer:

0.0033

Step-by-step explanation:

Answer:

0.033

Step-by-step explanation:

0.33% as a decimal is 0.033. You move the decimal point 2 times to the left.

Answer:

Step-by-step explanation:

We need to find the unit rate. This found by dividing the price by the number of bananas so we get the price for 1 pound of bananas.

$1.97/5 = $0.39

$1.05/3 = $0.35

Answer:

4 towels per basket

Step-by-step explanation:

Answer:

For the first pic it’s 2 miles

Second pic I think it’s the second check box thing

Step-by-step explanation:

Answer:

63/210 or 3/10

B.

Step-by-step explanation:

14 · 15 = 210

9 · 7 = 63

Answer:

B- 3/10

Step-by-step explanation:

9/14 x 7/15

multiply across so you would now get 63/210 and we can divide the top and bottom by 21  so it will simplify to 3/10

Answer: 66.9

Explanation: This is right because BY looks to be equal to CY so there for CY is 66.9

Hope this helps :)

Answer:

hope this helps :)

Step-by-step explanation:

Justin will have enough money to buy the item. The amount Justin will pay is $25.92.

A sales tax is the amount of tax that is charged on the sales of goods and services. Tax is the compulsory sum levied by the government or an agent of the government on goods and services. Taxes increase the price of an item.

Percentage is the fraction of an amount expressed as a number out of hundred. The sign used to represent percentages is %.

Amount Justin would pay for the item = (1 + tax) x initial cost of the item

(1 + 0,08) x $24

= 1.08 x 24 = $25.92

$25.92 is less than the amount Justin has for the gift. This means that Justin has enough money to buy the gift.

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Answer:

The vertical line [tex]x = -2[/tex] is the axis of symmetry of [tex]y = -(x + 2)^{2} + 8[/tex].

Step-by-step explanation:

For the graph of a quadratic function, the axis of symmetry is the vertical line that goes through the vertex of this function.

In general, if the vertex of a quadratic function is at [tex](x_{0},\, y_{0})[/tex], the vertex form equation of this function would be [tex]y = a\, (x - x_{0})^{2} + y_{0}[/tex] for some non-zero constant [tex]a[/tex] ([tex]a \ne 0[/tex].)

Rewrite the quadratic equation in this question [tex]y = -(x + 2)^{2} + 8[/tex] to match the vertex form:

[tex]y = -(x + 2)^{2} + 8[/tex].

[tex]y = (-1)\, (x - (-2))^{2} + 8[/tex].

Thus:

Hence, the vertex of this parabola would be at [tex](-2,\, 8)[/tex].

Again, the axis of symmetry of this graph would be a vertical line that goes through this vertex. The [tex]x[/tex]-coordinate of this vertical line would be [tex](-2)[/tex]. The equation of this vertical line would be [tex]x = (-2)[/tex].

Hence, the axis of symmetry of this quadratic function would be [tex]x = (-2)[/tex].

Answer:

HFG - WUV By SAS similarity

Step-by-step explanation:

The sides are just a variation of each other because 9 is 1/2 of 18, and 21 is 1/2 of 42. Also the angle in-between is equal to each other.

Answer:

the answer is 600mph

Step-by-step explanation:

because 1800miles/3 hours=600mph

Answer:

600 mph

Step-by-step explanation:

In order to find the answer you must solve using this formula:

S=D/T

Where S is speed, D is distance, and T is time

You have time and distance, so you have to plug those into the formula:

S=1800/3

Then all you have to do is divide 1800/3 and get 600 for speed.

Answer:

2 1/2

Step-by-step explanation:

( 11 1/4 ) / ( 4 1/2 ) = 2 1/2

( 2 1/2 ) = 5/2

The width of the pan is 2.70 inches.

The volume of the pan is 409,024 inches³

A rectangular prism is a polyhedron with six faces and twelve edges. It is also known as a cuboid.

The width of the foil can be determined by dividing the area by the length.

Width = area / length

1114 / 412 = 2.70 inches

Volume of the pan =length x width x height

83 x 154 x 32 = 409,024 inches³

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2:16 3:24 4:32 5:40 6:48

Answer:

Larry

Step-by-step explanation:

15divided by 2 is 7.5

Julie:4

Mike:6

Katie:6

The population of interest to the department of education will be all college students.

A population is a large group of individuals that have some common feature by the researcher's point of interest.

Here the Department of Education wishes to estimate the proportion of all college students who have a job off-campus.

Proportion: A proportion is an equation in which two ratios are set equal to each other. If there is 1 boy and 3 girls you could write the ratio as: 1 : 3 (for every one boy there are 3 girls) 1 / 4 are boys and 3 / 4 are girls. 0.25 are boys (by dividing 1 by 4).

So , he needs data of all students to compute the exact proportion.

But instead of that he surveyed 1600 randomly selected students which determine the sample.

Sample just gives the estimate of the parameter.

Hence, the population of interest to the Department of education is " All college students" .

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Answer:

12 console games

Step-by-step explanation:

if 2/4 are console games when you have 12, that means 6/12 are console games so to double the amount, add 6. 12+6=18.

12 out of the 18 are now console games making console games 6/9 (2/3 simplified) of the game collection.

Answer:

It’s A. (5,6,8)

Answer:

3.2

Step-by-step explanation:

0.42*8 =3.2

Answer:

I think the answer is 2 positive tiles and 5 negative tiles.

Step-by-step explanation:

good luck m8

Answer:

g777777777777777777777ttttttttttttttttttttttttttttttttt

Step-by-step explanation:

The Ella works 16 hours after school and 8 hours before school.

What is an mathematical expression?

Expression in mathematics is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Here, it is given that :

Ella works two part-time jobs, one before school and one after school. Before school, she earns $11.25/hour, and after school "a" she earns $11..75/hour and She works twice as many hours after school that is :

a = 2b ......(1)

also, 11.25a + 11.75b = 278....(2)

now, solving for a and b :

11.25a + 11.75b = 278

11.25(2b) + 11.75b = 278

b = 278/34.25

b ≈ 8 hours

Now, the value of a will be 2b = 16 hours

Therefore, the Ella works 16 hours after school and 8 hours before school.

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Answer:

x= Negative 42/13

As a mixed number= Negative 3 3/13

Step-by-step explanation:

Answer:

hope this helps

Step-by-step explanation:

Answer:

Proportinal

Step-by-step explanation:

The y is 0