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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

You might be interested in
Can you help me please ​
Olenka [21]

Answer:

log_372 = 3.8928

Step-by-step explanation:

Given

log_38 = 1.8928

Required

Evaluate log_372

We have:

log_372 = log_3(8 *9)

Apply law of logarithm

log_372 = log_38 +log_39

Express 9 as 3^2

log_372 = log_38 +log_33^2

Evaluate the exponents

log_372 = log_38 +2log_33

log_33 = 1.

So:

log_372 = log_38 + 2 * 1

log_372 = log_38 + 2

Substitute log_38 = 1.8928

log_372 = 1.8928 + 2

log_372 = 3.8928

5 0
3 years ago
What are the coordinates of the hole in the graph of the function?
MakcuM [25]

Answer:

The hole is at (5,7)

Step-by-step explanation:

x^2 − 3x − 10

-------------------

x−5

Factor the numerator

(x-5)(x+2)

-------------------

x−5

There is a hole at x=5 since it will cancel in the numerator and the denominator

f(x) = x+2  and letting x = 5

f(5) = 5+2

The hole is at (5,7)

4 0
3 years ago
Explain how proving two triangles congruent can help prove parts of the triangle congruent.
Ierofanga [76]
You can use the CPCTC (Corresponding Parts of Congruent Triangles are Congruent) property. This means that when two triangles are congruent, all the corresponding parts are congruent to each other.

Have an awesome day! :)
8 0
3 years ago
Read 2 more answers
Which is the correct answer
Arturiano [62]

Answer:

I think it is -34 but i might not be right

Step-by-step explanation:

4 0
3 years ago
How do you make a function
dmitriy555 [2]
This site will tell you how https://sciencing.com/write-functions-math-8315770.html
I’m not very good at explaining it sorry
7 0
3 years ago
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