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mylen [45]
3 years ago
6

Please, someone help? ​

Mathematics
1 answer:
anzhelika [568]3 years ago
4 0

Answer:

x = -5 + \sqrt{26}

Step-by-step explanation:

f(x) = x² + 10x - 1

        x² + 10x = 1

        x² + 10x + 25 = 1 + 25

        (x + 5)² = 26

take the square root of each side to get:

        x + 5 = √26

        x = √26 - 5  or -5 + √26

       

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Simplify this expression: 4(x+3)+3(5-x)
prisoha [69]

Answer:

x+27

Step-by-step explanation:

Let's simplify step-by-step.

4(x+3)+3(5−x)

Distribute:

=(4)(x)+(4)(3)+(3)(5)+(3)(−x)

=4x+12+15+−3x

Combine Like Terms:

=4x+12+15+−3x

=(4x+−3x)+(12+15)

=x+27

Hope you find this Useful!

8 0
2 years ago
Read 2 more answers
11m −4/3=2m+5/3<br><br><br><br>pls tell me this answer is the answer 3
Oksana_A [137]

Answer:

m=1/3

Step-by-step explanation:

11m- 4/3=2m+5/3

-2m. - 2m

9m -4/3=5/3

+4/3.+ 4/3

9m= 9/3

m=1/3

6 0
2 years ago
Jon borrows $4.50 from his friends to pay for his snacks, and $13.65 from his sister to go to the movies. How much money does he
yarga [219]

Answer: $18.15

Step-by-step explanation:

$ 4.50 + $13.65 = total amount due

4 0
3 years ago
What is 15 tens - 1 gross ​
vampirchik [111]

Answer:

see the explanation

Step-by-step explanation:

we know that

A gross is equal to 120 ones or ten dozen

what is 15 tens - 1 gross

we know that

15 tens means ----> That you are adding 10, 15 times or multiplying 10 by 15, which gives you

10(15)=150

1 gross means ---> That you are adding 10, 12 times or multiplying 10 by 12

which gives you

10(12)=120

so

The algebraic expression of 15 tens - 1 gross is equal to

150-120=30

Convert to word expression

3  tens

8 0
3 years ago
If 8x = 48, then x = ___. (Only input whole number) Numerical Answers Expected! Answer for Blank 1:
Leno4ka [110]

Answer:

x = 6

Step-by-step explanation:

8x = 48,

Divide each side by 8 to isolate x

8x/8 = 48/8

x = 6

5 0
3 years ago
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