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3 years ago

How is the answer -1? How do I get it?

Mathematics

2 answers:

UNO [17]3 years ago

8 0

When distributing the negative three into the parentheses, that canceled out the -5 and made it a positive 15

Lerok [7]3 years ago

8 0

5x- 3(x-5)=13

5x-3x+15=13

2x=-2

x is -2

Your mistake is that you forgot to add when you multiply 3 and 5

and negative and negative make positive

hope this helps

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Irina18 [472]

Answer:

$\bf C)\: -\cfrac{1}{32}$

Step-by-step explanation:

$\tt \cfrac{1}{2^{-2}x^{-3}y^5}$

$\tt x=2\\y=-4$

Substitute ''x'' with '2' & 'y' with "-4":-

$\tt \cfrac{1}{2^{-2}\times \:2^{-3}\left(-4\right)^5}$

First let's solve $\tt 2^{-2}\times \:\:2^{-3}\left(-4\right)^5$

$\tt 2^{-2}\times \:2^{-3}=\boxed{\cfrac{1}{32} }$

$\tt \cfrac{1}{32}\left(-4\right)^5$

Calculate exponents:- -4^5= -1024

$\tt \cfrac{1}{32}\left(-1024\right)$

Remove parentheses, apply rule:- $\tt a\left(-b\right)=-ab$

$\tt-\frac{1}{32}\times \:1024$

$\tt \cfrac{1}{32}\times \cfrac{1024}{1}$

Apply fraction rule:-

$\tt -\cfrac{1\times \:1024}{32\times \:1}$

$\tt \cfrac{1024}{32}$

Divide numbers:-

$\tt -32$

Now that we're done factoring the denominator let's bring down the numerator which is ' 1 ':-

$\tt -\cfrac{1}{32}\;\; \bf Answer$

☆-------☆-------☆-------☆

3 0

2 years ago

Read 2 more answers

How do I subtract a whole number from a fraction

jasenka [17]

Answer:

In order to subtract a whole number from a fraction, you first have to turn the hole number into a mixed fraction.

Step-by-step explanation:

Say your fraction was 2/3 and your whole number was 5.

They have to have like denominators

5/1 - 2/3 = 15/3 - 2/3

15/3 - 2/3 = 13/3

13/3 = 4 1/3

6 0

3 years ago

Mhanifa please help with this

Fed [463]

Answer:

Use cross-multiplication to solve these

1) 6/2 = 4/p ⇒ 6p = 4*2 ⇒ p = 8/6 ⇒ p = 4/3
2) 4/k = 8/2 ⇒ 8k = 2*4 ⇒ k = 8/8 ⇒ k = 1
3) n/4 = 8/7 ⇒ n = 4*8/7 ⇒ n = 32/7
4) 5/3 = x/4 ⇒ x = 4*5/3 ⇒ x = 20/3

8 0

3 years ago

I will give 70 -0ints

kaheart [24]

Answer:

See below ~

Step-by-step explanation:

(a) Mean of the data

2.4 + 1.6 + 3.2 + 0.3 + 1.5 / 5
9/5
1.8

(b) New mean after each data point increased by 10

12.4 + 11.6 + 13.2 + 10.3 + 11.5 / 5
59/5
11.8

(c) New mean after each data point doubled [from (b)]

24.8 + 23.2 + 26.4 + 20.6 + 23 / 5
118/5
23.6

8 0

2 years ago

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Which of the following employees has the greatest total employee compensation?

Elina [12.6K]

We have to choose the correct answer which of the employees has the greatest total employee compensation. We just have to subtract the job expenses from total job benefits for everyone of them. A: $49,200 - $300 = $38,900. B : $49,500 - $500 = $49,000. C : $49,800 - $700 = $41,100. D : $50,100 - $900 = $49,200. The largest sum is $49,200 ( employee D ) . Answer: The greatest total employee compensation has Employee D.

3 0

3 years ago

Read 2 more answers