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3 years ago

8(1 - 5x) + 5 = -2 + 5x

Mathematics

1 answer:

andriy [413]3 years ago

7 0

X=1/3
Distribute 8 through the parentheses
8-40x+5=-2+5x
Add the numbers
13-40x+5=-2+5x

Answer: x=1/3

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Seven less than 5 times a number is 62. What is the number. (Explain)

Marrrta [24]

7-5*14=62

The equation above is how you would write it with a variable.

The number is 14.

This is because if you do 14 times 5, the answer is 70. Then If you subtract from that, it would be 62.

You can also do 62+7, which is 70, and then divide that by 5 and you will still get 14.

7 0

3 years ago

The angles in a triangle are such that one angle is 120 degrees more than the smallest angle, while the third angle is 3 times a

Westkost [7]

Answer:

a = 132; b = 12; c = 36

Step-by-step explanation:

a = b + 120

b = b

c = 3b

a + b + c = 180

(substitute these into the above equation)

b + 120 + b + 3b = 180

5b + 120 = 180

-120 -120

5b = 60

/5 /5

b = 12

(substitute b back into the first equations)

a = (12) + 120 = 132

b = (12)

c = 3(12) = 36

(check: 132 + 12 + 36 = 180)

7 0

3 years ago

Solve for x. z=(x-7)k

aliya0001 [1]

Answer:

$x=\frac{z}{k}+7$

Step-by-step explanation:

we have

$z=(x-7)k$

solve for x

That means ----> isolate the variable x

Divide by k both sides

$\frac{z}{k}=x-7$

Adds 7 both sides

$\frac{z}{k}+7=x$

Rewrite

$x=\frac{z}{k}+7$

5 0

3 years ago

Part of Sal's budget is shown. What percentage of his income goes toward savings?

ArbitrLikvidat [17]

Answer:

9.5%

.................

8 0

3 years ago

One vegetable warehouse had 210 tons of potatoes, another one had 180 tons. 90 tons of potatoes were delivered to the first and

vivado [14]

Answer:

6 days

Step-by-step explanation:

The equation for first warehouse would be:

210 + 90x

The equation for 2nd warehouse would be:

180 + 120x

Where x is he number of days.

In how many days will the first warehouse have 1.2 times less potatoes than the second warehouse?

This means the first warehouse expression TIMES 1.2 would give us 2nd warehouse expression. Equating and solve:

$180+120x=1.2(210+90x)\\180+120x=252+108x\\12x=72\\x=\frac{72}{12}\\x=6$

So it would require 6 days

4 0

3 years ago