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3 years ago

The product of a number and negative 8

Mathematics

1 answer:

notsponge [240]3 years ago

7 0

Answer:

-8x

Step-by-step explanation:

Because you don't know what that other number is, just substitue in x.

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The length of a rectangle is 3ft less than double the width, and the area of the rectangle is 14ft^2 find the dimensions of rect

german

Answer: $4\times 3.5\ ft^2$

Step-by-step explanation:

Given

area of the rectangle is $A=14\ ft^2$

Suppose width is given by w

So, length is $l=2w-3$

The area of a rectangle is $A=l\times w$

putting values

$\Rightarrow A=(2w-3)w\\\Rightarrow 14=2w^2-3w\\\Rightarrow 2w^2-3w-14=0\\\Rightarrow 2w^2-7w+4w-14=0\\\Rightarrow w(2w-7)+2(2w-7)=0\\\Rightarrow (2w-7)(w+2)=0\\\\\Rightarrow w=\dfrac{7}{2}\ ft$

length is $l=4\ ft$

6 0

3 years ago

The volume of a box is 4 in. wide, 2 in high and 5 in. long is

sladkih [1.3K]

Answer:

40 in^3

Step-by-step explanation:

Volume of a box is given by

V = l*w*h

V = 4*2*5

= 40 in^3

8 0

3 years ago

I need to solve for x, help please.

BaLLatris [955]

Answer:

x = 52 i hope this helps! :)

Step-by-step explanation:

so first you gotta realize that every triangle has an interior angle measurement sum of 180 degrees

so we are given 3 angles 74 degrees x + 2 and x

we now are going to put this into an equation 74 + x + 2 + x = 180

now lets combine like terms to get 76 + 2x = 180

then we are going to subtract the 76 from both sides 2x = 104

now lets divide both sides by 2 x = 52

so x = 52

we can plug in the value of x into both of the other equations to find the angle measurement

52 degrees

52 + 2 = 54 degrees

and then we have 74 degrees

add the 52, 54, and the 74 to make sure it is equal to 180 degrees

106 + 74 = 180

so yes, x does indeed equal 52 degrees

3 0

3 years ago

Read 2 more answers

How many square roots exist for the number 9?

Nookie1986 [14]

Two squares root. Because 3 * 3 = 9 and -3 * -3 = 9.

4 0

3 years ago

Read 2 more answers

A study was conducted on 64 female college athletes. The researcher collected data on a number of variables including percent bo

Leni [432]

Answer:

Hello please your question is in-complete attached is the complete question

degree of freedom = -62.90 ( e )

Step-by-step explanation:

The formula for calculating the F-statistic/test statistic is

test - statistic = Coef ( LBW) / SE Coef ( LBW )

= -0.72399 / 0.01151

= - 62.90

the degree of freedom the F-statistic has = -62.90

F-statistic test is any statistical test in which the test statistic has an F-distribution under the null hypothesis. the value of the test can be gotten from running an ANOVA test or regression analysis on the statistical models

4 0

3 years ago