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Nataly_w [17]
3 years ago
11

gn="absmiddle" class="latex-formula">
what does b equal?
Mathematics
1 answer:
xz_007 [3.2K]3 years ago
6 0

4b - 1 = -13

4b = -12

b = -3

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Factor the following
jek_recluse [69]

Answer:

(x - 4)×(x + 4)

Step-by-step explanation:

(x - 4)×(x + 4) = x^2 - 16

First we need to multiply inside the parenthesis one by one

Multiply x with (x + 4) and the result will be x^2 + 4x

Then multiply -4 with (x + 4) and result will be -4x - 16 we then add both of the result together by adding like terms

x^2 + 4x - 4x - 16 = x^2 - 16 (-4x eliminated 4x) therefore the answer to factorised form of x^2 - 16 is (x - 4)×(x + 4)

7 0
4 years ago
Read 2 more answers
The "mammals" data set in the "MASS" library contains the result of a study of sleep in mammal species. 1 2 Load the "mammals" d
dusya [7]

Complete Question:

The complete question is shown on the first uploaded image

Answer:

The probability that the random you randomly select species that are greater than 200 kg is  = 7/62

Step-by-step explanation:

Step One: Load the data set in to the R work space

data(mammals,package="MASS")

attach(mammals)

Step 2 : Obtain the list of the species that are greater than 200  and store it on y variable.

y <- subset(mammals,body>200)

Step Three : Obtain the total size

nrow(mammals)

Step Four : Obtain the  sum of species greater than 200

sum(body > 200)

total size = 62

size with body > 200 = 7

hence

required probability = 7/62

7 0
3 years ago
Whats 11+​(-​3)-1/8 j-3/8 j+7 ?<br><br> Thanks in advance!
Anuta_ua [19.1K]

Answer:

Your answer is

=-\frac{j}{2}+15

Step-by-step explanation:

11+​(-​3)-1/8 j-3/8 j+7

=11+\left(-3\right)-\frac{1}{8}j-\frac{3}{8}j+7\\

=11-3-\frac{1}{8}j-\frac{3}{8}j+7

add the similar objects

=11-3-\frac{1}{2}j+7

=\frac{1}{2}j=\frac{j}{2}

=11-3-\frac{j}{2}+7

=-\frac{j}{2}+15

6 0
3 years ago
What is the value of 3x divided by (10 - x) when 2x + 5 = 85
Reika [66]

Answer:

-4

Step-by-step explanation:

2x + 5 = 85

2x = 80

x = 40

3x/(10-x)

3(40)/(10-40)

120/-30 = -4

7 0
4 years ago
A new car can go 490 miles on 10 gallons of gas. How many miles can it go on 55 gallons of gas?
Hatshy [7]

Answer:

2695 miles

Step-by-step explanation:

3 0
3 years ago
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