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3 years ago

Jenny has a rope that is 7 1/2 feet long. She wants to cut it into pieces that are 3/4 of a foot long.

Mathematics

1 answer:

Dmitrij [34]3 years ago

5 0

10 I was dividing and got 10 hope it helped

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A sphere has a radius of 4 inches. What is the surface area of the smallest cube that could circumscribe the sphere?

vovikov84 [41]

Answer:

$SA=384\ in^2$

Step-by-step explanation:

we know that

The smallest cube that could circumscribe the sphere has a length side equal to the diameter of the sphere

In this problem

The radius of the sphere is $r=4\ in$

The diameter of the sphere is two times the radius

$D=2r=2(4)=8\ in$

The length side of the cube is

$b=8\ in$

Remember that

The surface area of a cube is equal to the area of its six faces

$SA=6b^2$

substitute the value of b

$SA=6(8)^2$

$SA=384\ in^2$

6 0

3 years ago

The summer olympic occurs every 4 years. Every 6 years, a US senator runs for reelection. If both events occurred last year how

deff fn [24]

Answer:

12 years

Step-by-step explanation:

every 4 years, olympic occurs.

Every 6 years, senator reelection.

if last year was 2020

in 2024 olympic will occur

in 2026 the reelection will occur

in 2028 olympic will occur

in 2032 olympic and reelection will occur will occur

2032 - 2020 = 12

12 years is the answer

7 0

3 years ago

Can someone plzz help me with these two answers?

galina1969 [7]

The answer to #5 is 171
The answer to #6 is -344

8 0

3 years ago

Kayla wants to find the width, AB, of a river. She walks along the edge of the river 65 ft and marks point C. Then she walks 25

AlladinOne [14]

Answer:

Part A) The triangles ABC and EDC are similar by AAA, because the three internal angles are equal in both triangles

Part B) The width of the river is about $39\ ft$

Step-by-step explanation:

we know that

If two triangles are similar, then the ratio of its corresponding sides is equal and its corresponding angles are congruent

Part A) we know that

In this problem , triangles ABC and CDE are similar by AAA, because its corresponding angles are congruent

m<DCE=m<ACB -----> by vertical angles

m<EDC=m<ABC -----> is a right angle

m<DEC=m<CAB -----> the sum of the internal angles must be equal to 180 degrees

Part B) we know that

The triangles ABC and EDC are similar -------> see Part A

therefore

$\frac{BC}{DC}=\frac{AB}{DE}$

substitute the values and solve for AB

$\frac{65}{25}=\frac{AB}{15}$

$AB=15*(\frac{65}{25})=39\ ft$

8 0

3 years ago

A two digit number is written at random what is the probability that the number will be odd

leonid [27]

Answer:

50%

Step-by-step explanation:

So there are 90 2 digit numbers. There are 45 2 digit odd numbers.

The probability should be 50%

7 0

3 years ago