3 years ago

Please help! I dont know how to do it

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

3 0

All triangles should equal 180 so the answer is B. When you solve it you get 60, 60, 60 which equals 180

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Solve the equation. Then check your solution. 5 /9 d = 9 /10 a. 31 / 90 c. 1/2 b. 1 31 /90 d. 50 /81

miskamm [114]

Answer:

d in (-oo:+oo)

(5/9)*d = 9/10 // - 9/10

(5/9)*d-(9/10) = 0

(5/9)*d-9/10 = 0

5/9*d-9/10 = 0 // + 9/10

5/9*d = 9/10 // : 5/9

d = 9/10/5/9

d = 81/50

Step-by-step explanation:

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3 years ago

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Circle the letter that is true about the grain size in rock

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Well circle it m9 XD

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3 years ago

The population of a town grows at a rate proportional to the population present at time t. The initial population of 500 increas

pantera1 [17]

Answer:

974

Step-by-step explanation:

Initial × Increase percentage ^ Time

500 × (1 + 10%)^(70/10)

500 × 1.1^7

= 974.36

The population of the town in 70 years will be 974.

5 0

3 years ago

What is the missing value in the proportion 4/5 = x/30?

ra1l [238]

Answer:

$\displaystyle x = 24$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{4}{5} = \frac{x}{30}$

Step 2: Solve for x

[Multiplication Property of Equality] Cross-multiply: $\displaystyle 5x = 120$
[Division Property of Equality] Divide 5 on both sides: $\displaystyle x = 24$

4 0

3 years ago

How do I solve 16 = 5x - 9

Darya [45]

16=5x_9

16=_9+5
16 +_5x=_9+5x+_5x

16 + -5x=_9+0

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3 years ago

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Please help! I dont know how to do it ​

Please help! I dont know how to do it