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inn [45]
3 years ago
12

1" title=" \sqrt{7a - 10} - \sqrt{2a + 5} = 0" alt=" \sqrt{7a - 10} - \sqrt{2a + 5} = 0" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Alik [6]3 years ago
7 0

Answer:

a=3

Step-by-step explanation:

\sqrt{7a-10} =\sqrt{2a+5} \\squaring\\7a-10=2a+5\\7a-2a=5+10\\5a=15\\a=3

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kondaur [170]
44 the total volume of this composite solid is 896
4 0
3 years ago
A number times six plus the same number times two
Travka [436]

Answer:

6x +2x

Step-by-step explanation:

when the number= x, you can just form the equation as per usual. 6x = a number times 6; 2x = a number times 2.

x is used bc the number is an unknown value. only x can be used bc it is stated the same number. hsing different alphabets such as y or z indicates the unknown value ia different.

6 0
3 years ago
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Help plz I’m not good at this
Natalka [10]

Answer:

<u>The correct answer is A. 1/8</u>

Step-by-step explanation:

<u>Let's solve (1/3 * 9/16) / 1 1/2 = x</u>

(1/3 * 9/16) / 1 1/2 = x

9/48 / 1 1/2 = 9/48 * 2/3 = 18/144

18/144, we can simplify dividing by 18 at the numerator and the denominator, this way:

x = 18 ÷ 18/ 144 * 18 = 1/8

<u>The correct answer is A. 1/8</u>

4 0
3 years ago
How many solutions does 3.2p-2.5+2.1p=5p-7/2
Sergio039 [100]

Answer:

-3.3...

Step-by-step explanation:

3.2p-2.5+2.1p=5p-7/2

3.2p+2.1p-5p=-7/2+2.5

5.3p-5p=-7/2+2.5

0.3p=-1

p=-1/0.3

p=-3.3

5 0
3 years ago
Find an equivalent ratio in simplest terms:<br> 56:44
Delvig [45]
56 / 4 = 14 and 44 / 4 = 11, so 14:11
5 0
3 years ago
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