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3 years ago

Select the correct answer from each drop-down menu.

Mathematics

1 answer:

storchak [24]3 years ago

3 0

Answer:

Step

Statement

3x + 7 = 15

x + 7 - 7 = 15

ža

= 15

= 3.15

r = 45

Which statement is true?

A. Jake made a mistake in step 2.

Jake made a mistake in step 4.

Jake made a mistake in step 5.

OD Jake solved the equation correctly.

Answer:

If the air trolley ended at 60 km and it traveled 20 km- what was its starting position?

Step-by-step explanation:

Step-by-step explanation:

Step

Statement

3x + 7 = 15

x + 7 - 7 = 15

ža

= 15

= 3.15

r = 45

Which statement is true?

A. Jake made a mistake in step 2.

Jake made a mistake in step 4.

Jake made a mistake in step 5.

OD Jake solved the equation correctly.

Answer:

If the air trolley ended at 60 km and it traveled 20 km- what was its starting position?

Step-by-step explanation:

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If 5p=70 2-302, then the value of p is

aniked [119]

Answer:

5p = 70 - 30

5p = 40

divide both sides by 5.

5/40

p = 8

Step-by-step explanation:

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3 years ago

LAST QUESTION HELP A GIRL OUT

uysha [10]

Using the given points, you can write the equation as ...
$y=7.5\left(\dfrac{16.875}{7.5}\right)^{\frac{x-1}{3-1}}=7.5\cdot (2.25^{\frac{1}{2}})^{x-1}\\=7.5\cdot 1.5^{x-1}=7.5\cdot 1.5^{-1}\cdot 1.5^{x}\\y=5\times 1.5^{x}$

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3 years ago

Which number is irrational?<br> А) (1.5)2<br> B) root of 41<br> C root of 49<br> D (15)2

Umnica [9.8K]

Answer:

Step-by-step explanation:

A. (1.5)2 = 3 which is rational.

B. Root of 41 cannot be expressed as a fraction of p/q, where p and q are integers and q not equal to 0.

C. Root of 49 = 7 which is rational.

D. 15(2) = 30 which is rational

5 0

3 years ago

A scientist removed a sample of 39.1 grams of a chemical from a container. The sample was 5 3/4 grams less than 3/10 of the tota

Oksanka [162]

The first thing we must do for this case is to define variables:

x: the total mass of the chemical in the container

y: a sample of a chemical from a container

We have the following equation:

y = (3/10) x - 5 3/4

Then, for y = 39.1 we have:

39.1 = (3/10) x - 5 3/4

Clearing x:

(3/10) x = 39.1 + 5 3/4

(3/10) x = 44.85

x = (10/3) * (44.85)

x = 149.5 grams

Answer:

the total mass in grams of the chemical in the container before the scientist removed the sample of 39.1 grams was:

x = 149.5 grams.

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3 years ago

Simplify the expression and identify which property is used in each step.

777dan777 [17]

Answer:

1.2

Step-by-step explanation:

(0.85 + 0.50 + 0.15) - 0.30 Given

Simplify by adding in the parentheses first

(0.85 + 0.50 + 0.15) - 0.30

(1.35 + 0.15) - 0.30

(1.5) - 0.30

Subtraction Property

1.5 - 0.30

1.2

7 0

2 years ago