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3 years ago

Please help me and show work, i will give brainly, thank you, and five star, and this is worth 45 points

Mathematics

2 answers:

STALIN [3.7K]3 years ago

6 0

Answer:

1. B 2. D 3. C 4. B

Step-by-step explanation:

1. If it takes 1/3 to make a scarf then you can make 3 with one yard of fabric and since there are five you do 3 times 5 to make 15.

2. Since you want to build 8 and you can't use the wood you cut up already. All you need is eight because each board makes 1 birdhouse.

3. If there are 12 then you take 3/4 on all of them you get 12 but then you have some left over and then you get 4 more 3/4 which makes your answer 16.

4. If you un-simplify 3/4 you get 6/8 and half of 6/8 is 3/8 which is your answer.

Hope this helps

Pls mark brainliest.

Aneli [31]3 years ago

5 0

Answer: do it your self stop eating chips and ponte las pilas

Step-by-step explanation:

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Can someone please help me the answer is not 133 or 109 please and thank you

schepotkina [342]

Answer:

Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks along the x-axis from the spotlight toward the bui

Sedbober [7]

Answer:

0.675 m/s

Step-by-step explanation:

Let height of shadow= y,CD=x

Height of man=2 m

Speed of man= $\frac{dx}{dt}=1. 8 m/s$

$\triangle ABD\sim\triangle ECD$

Therefore, $\frac{AB}{EC}=\frac{BD}{CD}$

$\frac{y}{2}=\frac{12}{x}$

$xy=24$

Differentiate w.r.t t

$x\frac{dy}{dt}+y\frac{dx}{dt}=0$

$x\frac{dy}{dt}=-y\frac{dx}{dt}$

$\frac{dy}{dt}=-\frac{y}{x}\frac{dx}{dt}$

When the man is 4 m from the building

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Substitute the values in above equation then, we get

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Substitute the values then we get

$\frac{dy}{dt}=-\frac{3}{8}\times 1.8=-0.675 m/s$

Hence, the length of his shadow on the building decreasing at the rate 0.675 m/s.

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3 years ago

Usama needs to read 6 novels each month.

Delicious77 [7]

Answer:

78 novels

Step-by-step explanation:

N= novels

M= month

6N = 1M

? = 13M

6N × 13M= 78NM

78NM ÷ 1M

cancel M, therefore;

the number of novels Usama needs to read in 13 months is 78.

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2 years ago

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