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3 years ago

PLEASE ANSWER I NEED HELP LOTS OF POINTS

Mathematics

2 answers:

Verizon [17]3 years ago

7 0

Answer:

blank 1 = 4

blank 2 = -5

blank 3 = -1

Step-by-step explanation:

stira [4]3 years ago

4 0

Easy easy easy easy easy easy easy easy ways

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The radius of a sphere is 10 units. Find the volume of the sphere. Write your answer in terms of pi.

Vsevolod [243]

The formula of a volume of sphere:

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

R - radius

We have R = 10. Substitute:

$V=\dfrac{4}{3}\pi(10^3)=\dfrac{4}{3}\pi(1,000)=\boxed{\dfrac{4,000\pi}{3}}$

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3 years ago

Which expression is equivalent to 3^4 times 3^-9

creativ13 [48]

Answer: 3^4 · 3^-9 = 3^4 · 1/3^9

Step-by-step explanation:

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A map of a trail in a park has a length of 4.5 centimeters from start to finish. The scale on the map states that 2 centimeters

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Step-by-step explanation:

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3 years ago

Read 2 more answers

15PTS QUICK

lana66690 [7]

Answer:

Option B

40x + 50y = 130

5x - 4y = 16

Option C

20x + 25y = 65

-20x + 16y = 64

Step-by-step explanation:

we have

$4x+5y=13$ ----> equation a

$10x-8y=-32$ ----> equation b

we know that

If two system of equations are equivalent, then their solution is the same

Part 1)

step 1

Multiply by 10 equation a both sides

$10(4x+5y)=10(13)$

$40x+50y=130$ ----> equation a'

step 2

Divide by 2 equation b both sides

$(1/2)(10x-8y)=(1/2)(-32)$

$5x-4y=-16$ ----> equation b'

The system of equations a and b and the system of equations a' and b' are equivalent

therefore

The system of equations a' and b' have the same solution as the given system

Part 2)

step 1

Multiply by 5 equation a both sides

$5(4x+5y)=5(13)$

$20x+25y=65$ ----> equation a'

step 2

Multiply by -2 equation b both sides

$-2(10x-8y)=-2(-32)$

$-20x+16y=64$ ----> equation b'

The system of equations a and b and the system of equations a' and b' are equivalent

therefore

The system of equations a' and b' have the same solution as the given system

6 0

3 years ago

Plz help me with this it's really important Riverside elementary school is holding a school-wide election to choose a school col

Alborosie

⅝ of the votes were for blue. That leaves ⅜ of the votes remaining. 5/9 of the remaining ⅜ votes were for green, so you multiply 5/9 x ⅜ = 15/72 votes for green. ⅝ of the votes were for blue, so you can multiply the fraction by 9/9 to get 45/72. So 45/72 votes were for blue, and 15/72 votes were for green. That leaves 12/72 votes remaining, which were for red. Since the question says 48 votes out of the total number of votes were for red, this means 48/v = 12/72 (v = the total number of votes). Cross multiply and solve for v to get v = 288. The fraction for blue is ⅝, so you can say x/288 = ⅝ (x = the number of votes for blue). Cross multiply and solve for x to get x = 180 votes for blue.

8 0

3 years ago