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Kitty [74]
3 years ago
7

Please help ASAP 25 pts + brainliest. please show work

Mathematics
2 answers:
nikdorinn [45]3 years ago
5 0

Answer:

it's answer is C. .80

Step-by-step explanation:

With reference angle A

base (b) = 8

Hypotenuse (h) = 10

Now

Cosine A

= b / h

= 8 / 10

= 0.8

quester [9]3 years ago
5 0

It is A as the answer

Step-by-step explanation:

1.multiply 8×10

2.multiply 80 ×6

3.the answer will be over 100 so it has to be A

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Anyone can help with the math question plz
dezoksy [38]

Answer:

A = 0

Step-by-step explanation:

3 times 0 =0

0 + 8 = 8

8 divided by 2 = 4

4 is less than 10

6 0
3 years ago
Select all that are like radicals after simplifying
sladkih [1.3K]

Answer:

please include a picture :3

3 0
3 years ago
Read 2 more answers
There is a beaker of 3.5% acid solution and a beaker of 6% acid solution in the science lab. Mr. Larson needs 200 milliliters of
oksian1 [2.3K]
Et x = the volume of the 3.5% solution 
<span>Let y = the volume 6% solution </span>

<span>(3.5%)x + (6%)y = (4.5%)(200) </span>
<span>0.035)x + 0.06y = 0.045(200) </span>
<span>0.035x + 0.06y = 9 ( Equation 1 )</span>

<span>x + y = 200 ( Equation 2 )</span>
<span>x = 200 - y </span>

<span>Substitute x = 200 - y into equation 1: </span>
<span>0.035x + 0.06y = 9 </span>
<span>0.035(200 - y) + 0.06y = 9 </span>
<span>7 - 0.035y + 0.06y = 9 </span>
<span>0.06y - 0.035y = 9 - 7 </span>
<span>0.025y = 2 </span>
<span>y = 2/(0.025) </span>
<span>y = 80 mL (the volume of 6% solution.)</span>

<span>Substitute y = 80 into equation 2: </span>
<span>x + y = 200 </span>
<span>x + 80 = 200 </span>
<span>x = 200 - 80 </span>
<span>x = 120 mL (the volume of the 3.5% solution.)</span>

<span>Therefore, Mr. Larson should combine 120 mL of the 3.5% solution </span>
<span>and 80 mL of the 6% solution to make 200 mL of 4.5% solution. </span>

<span>Answer is 120 mL of the 3.5% solution & 80 mL of the 6% solution

Hope I helped :)</span>
5 0
4 years ago
Need answers with for both please and thank you
den301095 [7]

Answer:

A: 23

B: 26

Step-by-step explanation:

...................

4 0
3 years ago
6. Which values make the following inequality true? 2x – 1 &lt; 10 {10, 15, 20} O {4, 6, 8} {2, 3, 4} O {5, 7, 9)​
Vinvika [58]

Answer:

[2,3,4]

Step-by-step explanation:

2(2) - 1 = 4

2(3) - 1 = 5

2(4) - 1 = 7

all these are <10

7 0
3 years ago
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