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Lisa [10]
3 years ago
15

Please help show work too please thank you

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
6 0
(3x-9) +(x+19)+x=180
5x+10=180
-10=-10
5x=170
5 = 5
x=34

2x+(2x+10)+x=180
5x+10=180
-10=-10
5x=170
5 = 5
x=34

yes they are similar
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X=2y-4<br>7x+5y=-66 <br> what is the x- value​
Gwar [14]

Answer:

x = -8

Step-by-step explanation:

x = 2y - 4 --- Equation 1

7x + 5y = -66 --- Equation 2

I will be using the substitution method to solve this.

Substitute x = 2y - 4 into Equation 2:

7x + 5y = -66

7(2y - 4) + 5y = -66

Evaluate.

14y - 28 + 5y = -66

Evaluate like terms.

19y - 28 = -66

Isolate 19y.

19y = -66 + 28

     = -38

Find y.

y = -38 ÷ 19

y = -2 --- Equation 3

Substitute y = -2 into Equation 1:

x = 2y - 4

x = 2(-2) - 4

Evaluate.

x = -4 - 4

x = -8

5 0
3 years ago
Translate the sentence into an inequality. Eight times the sum of a number and 20 is greater than or equal to 25. Use the variab
PtichkaEL [24]

Answer:

8x + 20 ≥ 25

Step-by-step explanation:

Well 8 times the sum of a number "x" plus 20,

So we can write the following,

8x + 20

and that should be greater than or equal to 25

8x + 20 ≥ 25

<em>Thus,</em>

<em>as an inequality it is 8x + 20 ≥ 25.</em>

<em />

<em>Hope this helps :)</em>

3 0
3 years ago
Write (4p^4) ^2 without exponents.
Inessa [10]

Answer:

(4p * 4p * 4p * 4p) * (4p * 4p * 4p * 4p)

Step-by-step explanation:

exponent is the number being multiplied by itself a number of times

2^4 is 2*2*2*2

3^1 is 3

7 0
3 years ago
The cost of a car rental is ​40$ per day plus 20 cents per mile. You are on a daily budget of ​92$. Write and solve an inequalit
Ipatiy [6.2K]

Answer:

92-40=52

52/0.2 (0.2 = 20 cents) = 260

Step-by-step explanation:

260 is the greatest distance you can travel.

6 0
2 years ago
Can someone help me with these I don’t understand at all
cupoosta [38]

Answer:

#1: ????

#2: \frac{3}{4} x 15

#3: \frac{7}{8} ÷ \frac{3}{4}

Step-by-step explanation:

For #2:

\frac{3}{4} x 15.

It's that because there are 3/4 cups of honey for one cake. To use for 15 cakes, you would have to multiply it by 15.

For #3:

\frac{7}{8} ÷ \frac{3}{4}.

It's that because the baker has 7/8 cups of honey. It takes 3/4 cups of honey for one cake. So you have to divide it by 3/4 cups in order to find out how many cakes.

Hope this helped! <3

7 0
3 years ago
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