3 years ago

Please help!!! I’ll give the best answer brainliest

Mathematics

1 answer:

ahrayia [7]3 years ago

5 0

Answer:

I think it's D

Step-by-step explanation:

I'm not 100% tho sorry if i'm wrong

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(5a-2)(5a+2)-3(1-a)-3a=

attashe74 [19]

So first we need to know the order of operations
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction

Then the special cases:
(I have attached a picture below)

Lets get into action!
(5a - 2)(5a + 2) - 3( 1 - a ) - 3a
25a² - 4 - 3 + 3a - 3a
25a² - 7
25a² - 7 is the answer

8 0

3 years ago

Read 2 more answers

Rectangle ABCD is graphed in the coordinate plane. The following are the vertices of the rectangle: A(3,-2), B(6,-2), C(6,5) and

rosijanka [135]

The area of ABCD is 21

8 0

3 years ago

Shelly compared the number of oak trees to the number of maple trees as a part of a study about hardwood trees in a woodlot. She

Dovator [93]

With the new ratio

3 maple trees for every 11 oak trees

132 oak trees (11*12=132)
3*12 =<span> 36 maple trees

</span><span>36 maple trees plus 132 oak trees = 168 total trees

</span>since your original ratio was 9:5 that means 9/14 of the trees were maple; so set up a proportion to find the number of trees that were maple before the bugs
$\frac{9}{14}= \frac{x}{168}$ cross multiply
14x = 1512
x= 108 maple trees before there were bugs

Finally do 108 - 36 (maple trees before, minus, maple trees after)

difference = 78 maple trees

6 0

3 years ago

Please help

Cerrena [4.2K]

About 3 times not exactly but about 3 because 90 devided by 300 is 3.3333

6 0

4 years ago

Please answer!!! I'll mark you as brainliest!!! :)

vladimir1956 [14]

Answer:

Step-by-step explanation:

1 4 5 9

1 (11)(14)(15)(19)

4(41)(44)(45)(49)

5(51)(54)(55)(59)

9(91)(94)(95)(99)

3 0

4 years ago