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gtnhenbr [62]
3 years ago
14

GIVING OUT BRAINLIEST HELP ME PLSS !!

Mathematics
2 answers:
MissTica3 years ago
8 0

Answer:

C) 5.66

Step-by-step explanation:

For a 45-45-90 triangle, the length of each leg length (not including the hypotenuse) is congruent to each other. If 8=y√2, then y=8/√2=4√2=5.66

german3 years ago
4 0

Answer:

5.66

Step-by-step explanation:

take 45 degree as reference angle

using cos rule

cos 45 =adjacent /hypotenuse

\frac{1}{\sqrt{2} } =y/8

\frac{1}{\sqrt{2} } *8=y

\frac{8}{\sqrt{2} }=y

4\sqrt{2} =y

5.66=y

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1. 15 is what percent of 40?<br> 2. 15 is 30% of what number?<br> 3. What number is 120% of 70?
Elis [28]
<span>1. 15 is what percent of 40?
   15 * 100 / 40 = 37.5
answer is </span><span>15 is 37.5% of 40
</span><span>
2. 15 is 30% of what number?
 15 / 0.3 = 50
answer : </span>15 is 30% of 50<span>

3. What number is 120% of 70?
120% = 1.2
1.2 + 1 = 2.2

2.2 * 70 = 154
answer: 154</span> is 120% of 70?<span>


</span>
5 0
3 years ago
5-3+2 any answers? Pls idk it help please
alina1380 [7]

Answer:

5-3+2=4

Step-by-step explanation:

5-3=2

2+2=4

4 0
3 years ago
Read 2 more answers
Please help me thanks
Alexandra [31]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How much coffee costing $4 a pound should be mixed with 3 pounds of coffee costing 4.50 a pound to obtain a mixture costing $4.3
Aleks04 [339]

Answer:

The quantity of coffee costing $4 a pound in the coffee mixture is 2 pounds.

Step-by-step explanation:

Given: Coffee costing $4 a pound is mixed with 3 pounds of coffee costing 4.50 a pound to obtain a mixture costing $4.30 a pound.

We have to find the quantity of coffee costing $4 a pound in the mixture.

Let x represent the number of pounds of $4 coffee.

Cost of one pound = 4x.

Cost of  3 pounds of coffee costing 4.50 a pound = 3(4.50)

Cost of mixture costing $4.30 a pound = (x+3)(4.30)

According to given problem,

4x+3(4.50)=(x+3)4.30

Solving for x, we get,

\Rightarrow 4x+13.5=4.30x+12.9

Rearranging like term together, we get,

\Rightarrow 13.5-12.9=4.30x-4x

\Rightarrow 0.6=0.30x

\Rightarrow x=2

Thus, the quantity of coffee costing $4 a pound in the coffee mixture is 2 pounds.

3 0
3 years ago
What expressions has a value equal to 28 divided by 4
nordsb [41]

Answer:

28/4=28/7

Step-by-step explanation:

when you divide 28 by 4 you get seven so if you use 7 instead of 4 to divide it's an equal value.

Sorry if it's incorrect, there wasn't a whole lot to go by! Good luck tho! :D

4 0
3 years ago
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