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harkovskaia [24]

3 years ago

7

BRUH HELP

1 answer:

TEA [102]3 years ago

4 0

Answer:

(E) 9

Step-by-step explanation:

I found what numbers worked in all three cases. I found that when a = 4 b = 5 c = 0, all of the equations were satisfied.

Equation 1 4 + 5 = 9

Equation 2 4 + 0 = 4

Equation 3 5 + 0 = 5

Also, a + b+ c or 4 + 5 + 0 = 9

If these answers are correct, please make me Brainliest!

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Simplify the square root of -72

kupik [55]

Answer:

6i $\sqrt{2}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ = $\sqrt{ab}$ and $\sqrt{-1}$ = i

Given

$\sqrt{-72}$

= $\sqrt{36(2)(-1)}$

= $\sqrt{36}$ × $\sqrt{2}$ × $\sqrt{-1}$

= 6 $\sqrt{2}$ × i

= 6i $\sqrt{2}$

5 0

3 years ago

What is the kinetic energy of a toy truck with a mass of 0.75kg and a velocity of 4 m/s (Formula: KE= 1/2mv2)

hoa [83]

Answer:6

Step-by-step explanation:

4 0

2 years ago

In circle A shown, BC || DE , mBC=58° and mDE=142°. Determine the measure of ZCFE . Show how you arrived at your answer. CORRECT

scoray [572]

We have been given an image of a circle A, where BC || DE , mBC=58° and mDE=142°. We are asked to find the measure of angle CFE.

Since segment DC is parallel to segment DE, so measure of arc BD will be equal to arc CE.

$\widehat{BD}=\widehat{CE}$

We know that sum of all arcs of a circle is equal to 360 degrees. So we can set an equation as:

$\widehat{BD}+\widehat{CE}+\widehat{BC}+\widehat{DE}=360^{\circ}$

Since $\widehat{BD}=\widehat{CE}$ , so we will get:

$\widehat{CE}+\widehat{CE}+\widehat{BC}+\widehat{DE}=360^{\circ}$

$2\widehat{CE}+\widehat{BC}+\widehat{DE}=360^{\circ}$

$2\widehat{CE}+58^{\circ}+142^{\circ}=360^{\circ}$

$2\widehat{CE}+200^{\circ}=360^{\circ}$

$2\widehat{CE}+200^{\circ}-200^{\circ}=360^{\circ}-200^{\circ}$

$2\widehat{CE}=160^{\circ}$

$\frac{2\widehat{CE}}{2}=\frac{160^{\circ}}{2}$

$\widehat{CE}=80^{\circ}$

Therefore, the measure of arc CE is 80 degrees.

We can see that angle CFE is inscribed angle of arc CE, so measure of angle CFE will be half the measure of arc CE.

$\angle CFE=\frac{80^{\circ}}{2}$

$\angle CFE=40^{\circ}$

Therefore, the measure of angle CFE is 40 degrees.

4 0

2 years ago

The formula x = -

diamong [38]

Answer:

quadratic formula

Step-by-step explanation:

7 0

3 years ago

At Sam’s Warehouse, a member pays $25 a year for a membership, and then buys all products at the regular store prices. A non-mem

Alecsey [184]

Answer:

$y = 25 + x$ --- Members

$y = 1.05x$ --- Non-members

Step-by-step explanation:

Given

$x \to store\ price$

$y\to total\ amount$

Members

$Membership =\$25$

Non-members

$Rate = 5\%$ increase

For the members, the equation is:

$y = Membership + Store\ price$

$y = 25 + x$

For non-members, the equation is:

$y = Store\ price * (1 + Rate)$

$y = x * (1 + 5\%)$

$y = x * (1.05)$

$y = 1.05x$

8 0

2 years ago