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Vinvika [58]
3 years ago
10

-10x-3-2.5x+20=67 solve equation

Mathematics
1 answer:
dlinn [17]3 years ago
4 0

Answer:

x = -4

Step-by-step explanation:

combine like terms

-10x - 3 - 2.5x + 20 = 67

-12.5x + 17 = 67

subtract 17 from both sides of the equal sign

-12.5x = 50

divide -12.5 from both sides of the equal sign

x = -4

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Solve<br><br> 1/5 (x+3)=−(2x+3)
Rasek [7]

Answer:

Step-by-step explanation:

just simplify the LHS first.

You can either multiply 1/5 by (x+3) and then solve

or

multiply both sides by 5 to get rid of 1/5 on LHS

I will multiply by 5

(x+3)= -10x-15     ( 5*1/5(x+3)= -5(2x+3)

now rearrange the equation

x+3=-10x-15

-10x-15-x-3=0

-11x-17=0

-11x=17

x= -17/11

4 0
3 years ago
How do u multiply fractions
Aleksandr [31]
Multiply the numerators together and the denominators to get the ending fraction.

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6 0
3 years ago
12.5g of a medicine cost 1075 naira. what is the cost of 1g medicine​
sveticcg [70]
86 Naira; divide 1075 by 12.5 (hopefully this is correct!)
8 0
3 years ago
A boat is heading towards a lighthouse, whose beacon-light is 136 feet above the
alexandr1967 [171]

The distance between the points A to B is 899.9 feet. After rounding off the  nearest integer we get 900 feet as the final answer.

Given we know that CD is perpendicular to AD.

The distance between CD is 139 feet.

As from points A the boat's crew measure the angle of elevation to the beacon as 6°

therefore, m∠A = 6°

Another time the angle of elevation is measured from point B which is 19°.

therefore, m∠DBC = 19°

tan 19° = CD/BD

BD = CD/tan19°

BD = 136/tan 19°

now for tan 6° = CD/AD (tangent is opposite over adjacent)

AD = CD/tan 6°

AD = 136/tan 6°

AB = AD ₋ BD

AB = 136/tan 6° ₋ 136/tan 19°

AB = 1295.2 ₋ 395.3

AB = 900 feet

hence the distance from point A to B is 900 feet.

Learn more about Heights and distances here:

brainly.com/question/2004882

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5 0
2 years ago
1 cup is equal to 8 fluid ounces. How many fluid ounces are in 3 cups, 3 fluid ounces?
Gnesinka [82]

Answer:

If one cup is 8 then 3 cups is 24

Step-by-step explanation:

This can be solved by multiplying:

1*8=8

3*8=24

4 0
3 years ago
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