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3 years ago

Questions in the photos. 40 points if you answer correctly.

Mathematics

2 answers:

nordsb [41]3 years ago

6 0

Answer:

Step-by-step explanation:

The point in the question is U

When reflected in the x-axis, it becomes W

When W is reflected in the y-axis, it becomes V

Charra [1.4K]3 years ago

5 0

Answer:

Step-by-step explanation:

the answer is U because -6.5 is negative and 1 is positive

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∠3 and ∠4 are _______.

katrin2010 [14]

Answer:

3.5

Step-by-step explanation:

the sqr root of 4 is 2

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Batteries come in packs of 4. Last month, Joe used 58 batteries in his remote control drone. How many packs of batteries did he

vovangra [49]

It is given that batteries come in a packs of 4. It means in each pack there are 4 batteries.

Joe used 58 batteries . So to find the total number of packets of batteries joe has to open is

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The number of battery can not be in decimal. So we will round the answer to integer. If we round it to 14 it means 14 packets. But in 14 packets there are 14*4 = 56 batteries .

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3 years ago

A sphere has a volume of 500/3 π cubic centimeters. What is the total surface area , in square centimeters, of the sphere

lutik1710 [3]

Answer:

$\large\boxed{S.A.=100\pi\ cm^3\approx314\pi\ cm^2}$

Step-by-step explanation:

The formula of a volume of a sphere:

$V=\dfrac{4}{3}\pi R^3$

R - radius

We have

$V=\dfrac{500}{3}\pi\ cm^3$

Substitute and solve for R:

$\dfrac{500}{3}\pi=\dfrac{4}{3}\pi R^3$ divide both sides by π

$\dfrac{500}{3}=\dfrac{4}{3}R^3$ multiply both sides by 3

$500=4R^3$ divide both sides by 4

$125=R^3\to R=\sqrt[3]{125}\\\\R=5\ cm$

The formula of a Surface Area os a sphere:

$S.A.=4\pi R^2$

Substitute:

$S.A.=4\pi(5^2)=4\pi(25)=100\pi\ cm^2$

$\pi\apprx3.14\to S.A.\approx(100)(3.14)=314\ cm^2$

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3 years ago

Using the linear combination method, what is the solution to the system of linear equations 5 x + 3 y = negative 10 and Negative

andreev551 [17]

Answer:

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3 years ago

Questions in the photos. 40 points if you answer correctly. ​

Questions in the photos. 40 points if you answer correctly.