All categories

3 years ago

Need more help - Attached image

Mathematics

2 answers:

Naily [24]3 years ago

7 0

Answer:

D. $10x^7 + 7x^5 -2x + 9$

Step-by-step explanation:

Like terms: $7x^7$ and $3x^7$ = $10x^7$

$5x^5$ and $2x^5$ = $7x^5$

$-3x$ and $x\\$ = $-2x$

$7$ and $2$ = $9$

The answer would be: $10x^7 + 7x^5 - 2x + 9$

Therefore, it is option D

Your Welcome! Vote me brainliest!!!

mylen [45]3 years ago

4 0

Answer:B

Step-by-step explanation:

You might be interested in

There are 30 students in the school chorale, and 12 of these students can stay after school today to help prepare the stage for

gtnhenbr [62]

Well it would be 12/30 but it could divide by 2 which equals 6/15 which can be divided by 3 which equals 2/5 so the answer 2/5

8 0

3 years ago

True or False - the following scenario depicts an independent relationship between variables (tree growth and air quality): 20%

Aneli [31]

True it will be true

7 0

3 years ago

Read 2 more answers

I just need help for one question

olganol [36]

(2,1) is the answer.

6 0

4 years ago

-(1+7x)-6(-7-x)=36 what is x equal to

Katyanochek1 [597]

Answer:

x = 5

Step-by-step explanation:

Step 1: Write equation

-(1 + 7x) - 6(-7 - x) = 36

Step 2: Solve for x

Distribute: -1 - 7x + 42 + 6x = 36
Combine like terms: -x + 41 = 36
Subtract 41 on both sides: -x = -5
Divide both sides: x = 5

Step 3: Check

Plug in x to verify it's a solution.

-(1 + 7(5)) - 6(-7 - 5) = 36

-(1 + 35) - 6(-12) = 36

-(36) + 72 = 36

-36 + 72 = 36

36 = 36

5 0

3 years ago

I need help with this pls

antoniya [11.8K]

I'll explain it simply for you

1st question
Of course you know phythagoras theorm
You even wrote it up there
It states that the sum of the square of the two sides of an equilateral triangle is equal to the square of the hypotenuse
${a}^{2} + {b}^{2} = {c}^{2}$
Where C is the hypotenuse
*NOTE* :
HYPOTENUSE is the greatest side in a triangle!!
And that's where your mistake is!
So you should take the greatest side as C
So in Q3. 7, 24 and 26 are the given numbers
You'll make the smaller two numbers a and b and the greatest number C
Using the Formula you'll solve the left side first which is
${a}^{2} + {b}^{2}$
Then the right side which is
${c}^{2}$

And if both are equal then it is a right triangle otherwise it isn't!
Let
a=7
b=24
c=26

a^2 + b^2
7^2 + 24^2
49 + 576 = 625
GREAT, Now the right side

26^2 = 676
Since they aren't equal it isn't a right angled triangle...

Then let
a=7.5
b=10
c=12.5

7.5^2 + 10^2
= 56.25 + 100
= 156.25

12.5^2 = 156.25

They are EQUAL
Therefore it is a right triangle too

Hopefully I helped

7 0

3 years ago