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rewona [7]
2 years ago
14

Solve the equation x2 + 7x = 30.​

Mathematics
1 answer:
Law Incorporation [45]2 years ago
5 0

Answer:

2*7=14+6=30 points plz

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Carolina leaves her house and walks 6 blocks she turns and heads east 8 blocks until she reaches matties house what is the short
s2008m [1.1K]

Answer:

10 blocks

Step-by-step explanation:

Given

First = 6\ blocks

Second = 8\ blocks east

Required

Determine the shortest possible distance

To better explain my solution, I've added an attachment that illustrates her movement.

Using the attachment as a point of reference, the shortest distance is calculated by calculating the length of the hypotenuse using Pythagoras theorem.

So, we have:

x^2 = 6^2 + 8^2

x^2 = 36 + 64

x^2 =100

Take positive square root of both sides

x = \sqrt{ 100

x = 10

5 0
2 years ago
PLEASE HELP ME!!! I NEED THIS REALLY SOON OR I WILL FAIL! What are some measurements that might be easier if we worked in the me
inessss [21]

Answer:

Centimeters might be easier because they can be much more precise than inches when there isn't an ideal length. Kilometers might be easier because it would not require such large numbers to work with.

Step-by-step explanation:

:)

5 0
3 years ago
I dont understand and this is very urgent so can someone help me out please?
wariber [46]

Answer:

Please Find the solution below

Step-by-step explanation:

Let us say the two equations are

x+y=5            --------------(A)

x-y=1              -------------(B)

Let us solve them for x and y by adding them

2x=6

x=3

Hence from (A)

3+y=5

y=2

Hence our solution is

x=3, y=2

Adding same number to equation (A) say 2 we get

x+y+2=5+2

x+y=5+2-2

x+y=5

Hence equation remains the same while adding same number to each side.

Same thing happens if we add same number to equation (B)

Hence we draw the conclusion that the solution remains the same if same number is added to each side of the original equation.

6 0
3 years ago
How many solutions are there to the equation <br> 8x - 7 = 2 (2x + 7) - 5
igomit [66]

Answer:

x=4

Step-by-step explanation:

8x - 7 =2(2x +7) - 5

8x - 7 =4x +14 - 5

8x - 7 =4x +9

8x - 4x =9 +7

4x =16

x=16 :4

x=4

3 0
3 years ago
Read 2 more answers
How much wrapping paper is needed to cover the gift box shown below?<br> SA = 2Lw + 2Lh + 2wh
Brrunno [24]

Answer:

528 square inches

Step-by-step explanation:

SA = 2(10·16) + 2(10·4) +2(4·16)

= 2(160)+2(40)+2(64)

= 320 + 80 + 128

= 528 square inches

8 0
3 years ago
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