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3 years ago

Help its due rn plzzz

Mathematics

1 answer:

zaharov [31]3 years ago

5 0

Answer:

x = 2.65, -2.65

Step-by-step explanation:

x² = 7

$x =$ ± $\sqrt{7}$

or x = 2.64575131.., -2.64575131...

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Factor by grouping:

erma4kov [3.2K]

The idea is to group up the terms into two groups, factor each group and then factor out the overall GCF

2x - 18 + xy - 9y
(2x - 18) + (xy - 9y)
2(x - 9) + (xy - 9y)
2(x - 9) + y(x - 9)
(2 + y)(x - 9)
(x - 9)(2 + y)

Answer: Choice B

3 0

3 years ago

What is $5.60 for 4 pounds as a unit rate.

Sphinxa [80]

so you can either do pounds per dollar or dollars per pound:

pounds per dollar : about 0.71 lbs / $

dollars per pound : $1.40 / lb

i hope this helped, based on the question i believe that it is dollars per pound but its good to know both and have a nice day

5 0

3 years ago

PLEASE ANSWER ILL MAKE YOU BRAINLIEST 2 questions

GREYUIT [131]

Answer:

Wait what is the question the question you put in was

"PLEASE ANSWER ILL MAKE YOU BRAINLIEST 2 questions"

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is the value of sin-1(1)? negative startfraction pi over 2 endfraction 0 startfraction pi over 2 endfraction π

mariarad [96]

The value of sin-1(1) is negative startfraction pi over 2 endfraction, startfraction -pi over 2 endfraction.

<h3>What is the value of sin (π/2)?</h3>

The value of sin (π/2) is equal to the number 1. The value of the sin-1(1) has to be find out.

Suppose the value of this function is <em>x</em>. Thus,

$x=\sin^{-1}(1)$

Solve it further,

$\sin(x)=(1)$ ......1

The value of sin (π/2) and -sin (-π/2) is equal to 1 such that,

$\sin\dfrac{\pi}{2}=-\sin\left(-\dfrac{\pi}{2}\right)=1$

Put this value in the equation 1,

$\sin(x)=\sin\left(\dfrac{\pi}{2}\right)=-\sin\left(-\dfrac{\pi}{2}\right)$

Thus, the range will be,

$\left(\dfrac{\pi}{2},-\dfrac{\pi}{2}\right)$

Thus, the value of sin-1(1) is negative startfraction pi over 2 endfraction, startfraction -pi over 2 endfraction.

Learn more about the sine values here;

brainly.com/question/10711389

3 0

3 years ago

Due in 20 mins help pls

Lubov Fominskaja [6]

Step-by-step explanation:

${13}^{2} = {6.5}^{2} + {x}^{2} \\ {x}^{2} = 126.75 \\ x = 11.2$

7 0

3 years ago

Read 2 more answers