Solve for b.
7+b=a

I need this for a quiz review

Answer:

5y+39=3y+85 that is 5y-3y=85-39= 2y=46 and the answer is y=23

Answer:

4)B

Step-by-step explanation:

0

0.25

0.50

0.75

Let's simplify this problem using the distributive property.

The first thing we want to do is change the minus to plus a negative.

Now distribute or multiply the 8 times

each of the terms inside the set of parentheses.

So we get 8(5) + 8(-2x) and this simplifies to 40 + -16x.

Answer:

x = 5 and y = -6

Step-by-step explanation:

The given equations are :

6x + 3y = 12 ...(1)

4x + y = 14 ...(2)

Multiply equation (2) by 3.

12x + 3y = 42 ...(3)

Subtract equation (1) from (3).

12x + 3y-(6x + 3y) = 42-12

12x+3y-6x-3y = 30

6x = 30

x = 5

Put th value of x in equation (2).

4(5) + y = 14

20 +y = 14

y = -6

So, the solution of the equations are x = 5 and y = -6.

Step-by-step explanation:

4,5,6 do not form a right angle triangle cus 4²+5² is not equal to 6² i.e 16+25is not equal to 36

Answer:

each side of the hexagon measures 40 cm (which agrees with answer B)

Step-by-step explanation:

Recall that a regular hexagon has six equal sides, therefore, each side would be one sixth of the 240 cm:

each side of the hexagon = 240 cm / 6 = 40 cm

Answer:8.3

Step-by-step explanation:trust

Answer:

I suppose that we want to use the expression in number 4.

The expression we need to use is:

6/(1 + 1/3)

This is:

"the quotient between the number 6 and the number 1 and 1/3"

We could write a problem like:

"We have 1 and 1/3 pounds of apples, and we have 6 grams of caramel that we want to divide evenly between all the apples. How much caramel we will have in each pound of apples?"

Then we need to divide the total amount of caramel by the total amount of apples, this is:

(6gr)/(1 + 1/3 lb) = (6/(3/3 + 1/3  )) gr/lb = (6/ 4/3) gr/lb = 6*(3/4) gr/lb

= 18/4 gr/lb =  (16 + 2)/4 gt/lb = 16/4 gr/lb + 2/4gr/lb = 4 gr/lb + 1/2 gr/lb

= (4 and 1/2) gr/lb

Answer: if your solving for x it’s -2

Step-by-step explanation:

Answer:

x is -2

Step-by-step explanation:

because -4 x -2 is 8

Answer:

Diameter = 7

Radius = 3.5

Step-by-step explanation:

Hi! Ace here.

So, the formula to find circumference is dπ or 2rπ

So to find the diameter, you do the circumference/π

To find the radius, you'd do the circumference/2π

Plug-in those numbers and there you go!

Hope this helps, let me know if you have any questions.

I know this was a very vague explanation so I encourage you to ask any questions. Thank you!

Answer:

The first box will have 90 marbles, the second 180 and the third 270.

Step-by-step explanation:

Division in a ratio of 1:2:3

1 + 2 + 3 = 6

So

The first box will have 1/6 of the marbles.

The second box will have 2/6 = 1/3 of the marbles

The third box will have 3/6 = 1/2 of the marbles.

First box:

One sixth, so:

(1/6)*540 = 540/6 = 90

Second box:

One third, so:

(1/3)*540 = 540/3 = 180

Third box:

One half, so:

(1/2)*540 = 540/2 = 270

The first box will have 90 marbles, the second 180 and the third 270.

Answer:

Step-by-step explanation:

Slope or m is defined as

m=(y2-y1)/(x2-x1) in this case

m=(3-0)/(4-0)

m=3/4

Answer:

m<7 = 49°

m<8 = 41°

m<9 = 49°

m<10 = 41°

Step-by-step explanation:

Given :

m<7 ≅ m<9

m<8 = 41°

m<7 = 90° - m<8 (complementary angles)

m<7 = 90° - 41° (substitution)

m<7 = 49°

m<9 = m<7 (m<7 ≅ m<9)

m<9 = 49° (substitution)

m<10 = 90 - m<9

m<10 = 90 - 49

m<10 = 41°

Answer:

The answer is -13.

Step-by-step explanation:

-9   +   -4    =  -13

Answer:

10 ; 22

Step-by-step explanation:

Ghana = G

Cameroon = C

Cameron only = 8

Ghana only = 12

Total sampled = 40

Both Ghana and Cameroon = x

Not traveled to either = 10

Ghana only + Cameroon only + both Ghana and Cameroon + not traveled to either  = total sampled

12 + 8 + x + 10 = 40

30 + x = 40

x = 40 - 30

x = 10

Number that had gone to Ghana before :

Ghana only + both

12 + x

12 + 10

= 22

Answer:

Step-by-step explanation:

Hi there!

[tex]\large\boxed{x < 2}[/tex]

[tex]\frac{4x + 6}{7} < 2[/tex]

Begin by multiplying both sides by 7:

[tex]4x + 6 < 2 * 7 \\\\4x + 6 < 14[/tex]

Subtract 6 from both sides to isolate for x:

[tex]4x + 6 - 6 < 14 - 6\\\\4x < 8[/tex]

Divide both sides by 4 to solve for x:

[tex]4x/4 < 8/4\\\\x < 2[/tex]

Answer:

729

Step-by-step explanation:

9x9x9

Answer:

9*9*9 = 729

Step-by-step explanation:

This can also be expressed by 9^3 (Nine cubed)

9 times 9 is equal to 81. 81 times 9 is equal to 729

There you go!

PS: Give school a chance, I know it's hard during this special time, but once this fades away, you might enjoy it a bit more. :D

Answer:

A

Step-by-step explanation:

basta a hehehehhjshshshss

Answer: what

the way you worded the question makes no sense

Answer:

2/9

Step-by-step explanation:

Answer:

2352

Step-by-step explanation:

(100 - 2) x 24 = 2400 - 48 = 2352

Answer:

I think it's 18

Step-by-step explanation:

1.5 x 1.5 is the first area of a single side, which is 3. 3 x 6 is 18.

sorry if this is wrong!

Hi there!

3x-4=6

To find x, add 6 with 4 then divide by 3...

[tex]6+4=10[/tex]

[tex]10[/tex]÷[tex]3=\frac{1}{3}[/tex]

Final Result: x=1/3

Answer:

2500×100/2×450

25/2×450

25/900=

36

Answer:

x=4

Step-by-step explanation:

multiplying everything by x-4 we get

5x=20+3x-12

2x=8

x=4

if my answer helps please mark as brainliest.