3 years ago

Plsss help I’ll give u brainlest and 10 points

Mathematics

1 answer:

snow_lady [41]3 years ago

5 0

It says 5 points bro

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saul85 [17]

Answer:

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3 years ago

One solution of x^2-25=0 is 5. What is the<br> other solution?<br> Enter the correct answer.

Serga [27]

Answer:

<h2>The other solution: x = -5</h2>

Step-by-step explanation:

$x^2-25=x^2-5^2\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=(x-5)(x+5)\\\\x^2-25=0\to(x-5)(x+5)=0\iff x-5=0\ \vee\ x+5=0\\\\x-5=0\qquad\text{add 5 to both sides}\\x=5\\\\x+5=0\qquad\text{subtract 5 from both sides}\\x=-5$

5 0

3 years ago

Which is the interquartile range of the data set: 8, 9, 10, 11, 12?

Furkat [3]

Your answer is going to be c

7 0

3 years ago

Read 2 more answers

Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.

SpyIntel [72]

Let

x------> the number of multiple choice question

y------> the number of free response question

we know that

$3x+8y=55$ -----> equation A

$x+y=15$

$x=15-y$ -----> equation B

Substitute equation B in equation A

$3[15-y]+8y=55$

$45-3y+8y=55$

$5y=55-45$

$5y=10$

$y=2$

Find the value of x

$x=15-y$

$x=15-2=13$

therefore

<u>the answer is</u>

the number of multiple choice question are $13$

the number of free response question are $2$

5 0

3 years ago

Read 2 more answers

PLZ HELP ASAP SOLVE SIMMILAR TRIANGLES

Shkiper50 [21]

For this case by similarity of triangles we can use the following relationship:
(x) / (11) = (2) / (10)
We clear the value of x:
x = ((2) / (10)) * (11)
Rewriting:
x = ((1) / (5)) * (11)
x = 2.2
Equivalently:
x = 22/10
x = 11/5
Answer:
The value of x is:
x = 2.2
Equivalently:
x = 11/5

6 0

4 years ago