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3 years ago

5

-2.8k=7 how do I solve for k?

2 answers:

baherus [9]3 years ago

4 0

Answer:

k= -2.5

Step-by-step explanation:

larisa [96]3 years ago

4 0

7/-2.8. We have to get k to one side and we can do that by diving 7 by -2.8 so k is equal to -2.5 .

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Explanation:

No change, 0 in the 1-20 range

33: 1 in the 21-40 range

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4 years ago

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Which of the following is true about the function shown below?

Reil [10]

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Step-by-step explanation:

d is true

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4 years ago

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VladimirAG [237]

Answer:

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Step-by-step explanation:

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3 years ago

Ellen needs to buy 180 inches of ribbon to wrap a present. The store sells ribbon only in whole yards. How many yards does Ellen

exis [7]

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4 0

4 years ago

Joshua is 1.45 meters tall. At 2 p.m., he measures the length of a tree's shadow to be 31.65 meters. He stands 26.2 meters away

Lena [83]

Answer:

The height of the tree=8.42 m

Step-by-step explanation:

We are given that

Height of Joshua, h=1.45 m

Length of tree's shadow, L=31.65 m

Distance between tree and Joshua=26.2 m

We have to find the height of the tree.

BC=26.2 m

BD=31.65m

CD=BD-BC

CD=31.65-26.2=5.45 m

EC=1.45 m

All right triangles are similar .When two triangles are similar then the ratio of their corresponding sides are equal.

$\triangle ABD\sim \triangle ECD$

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

Substitute the values

$\frac{AB}{1.45}=\frac{31.65}{5.45}$

$AB=\frac{31.65\times 1.45}{5.45}$

$AB=8.42m$

Hence, the height of the tree=8.42 m

6 0

3 years ago