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Mama L [17]
3 years ago
15

Evaluate. 13[42–(2+4)]

Mathematics
1 answer:
german3 years ago
6 0

Answer:

468

Step-by-step explanation:

=13[42-6]

=13 (36)

=13×36

=468

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My shadow in the back. Yeah no I need help. One again.
Neporo4naja [7]

1 2/5 - (-3/5)

First, we're going to convert 1 2/5 into an improper fraction.

1 2/5 = 7/5

7/5 - (-3/5)

Subtracting a negative is the same as adding, so the problem will look like:

7/5 + 3/5

The denominators are the same, so we just add the numerators.

The answer is 10/5, or 2.

7 0
3 years ago
Solve the proportion and round your answer to the nearest tenth.
GalinKa [24]

Answer:

y = 1.1

Step-by-step explanation:

Proportion is a statement that two ratios are equal.

It can be written in two ways:

  • Two equal fractions \frac{a}{b} = \frac{c}{d}
  • Two equal sides a: b = c: d.

We can use cross products to find a missing term in it.

Let us solve the question

∵ The proportion statement is \frac{7.7}{15.4} = \frac{y}{2.2}

→ Use the  cross multiplication to find y

∵ y × 15.4 = 7.7 × 2.2

∴ 15.4y = 16.94

→ Divide both sides by 15.4 to find y

∵ \frac{15.4y}{15.4} = \frac{16.94}{15.4}

∴ y = 1.1

<em>No need to round it to the nearest tenth because the answer has no hundredth to round it to the tenth</em>

8 0
2 years ago
Find inequality x^4-13x^2 36&gt;0
NeX [460]
<span><span>x<<span>−<span><span>21.633308<span> or </span></span>x</span></span></span>>21.633308</span><span>
This is the answer ;D</span>
7 0
2 years ago
If a hiker starts at sea level and increases her elevation at a rate of 1 foot per minute what will her elevation be in 20 minut
sattari [20]

Answer:

20 feet above sea level.

Explanation:

This can be solved by looking at the Rate of Change. It is given that for ONE minute that passes by, her elevation increases by ONE foot.

With this rate, after 20 minutes, the elevation can be shown as:

20 min × 1 foot= 20 feet.

4 0
2 years ago
Read 2 more answers
I’m so confused please help there’s a photo above btw
Strike441 [17]
Wow I don't get it either but my guess would be 9,6...sorry....
8 0
3 years ago
Read 2 more answers
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