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Nina [5.8K]
3 years ago
9

What is the value of y?

Mathematics
2 answers:
nexus9112 [7]3 years ago
8 0
^^^ that also helped me thank you
babymother [125]3 years ago
3 0

Answer:

{y}  =  6\sqrt{3} \:units

Step-by-step explanation:

By Pythagoras Theorem:

{y}^{2}  =  {(9 + 3)}^{2}  -  {(6)}^{2} \\  \\   {y}^{2}  =  {(12)}^{2}  -  {(6)}^{2} \\  \\   {y}^{2}  = 144 -  36 \\  \\  {y}^{2}  = 108 \\  \\  {y}  =  \sqrt{108}  \\  \\  {y}  =  \sqrt{36 \times 3}  \\  \\ {y}  =  \sqrt{ {6}^{2}  \times 3}  \\  \\ {y}  =  6\sqrt{3}\:units

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The area of a triangular block is 49 square inches. If the base of the triangle is twice the height, how long are the base and t
andrezito [222]
1) Formula: area = height * base / 2

2) Call x the height:

height = x

base = 2x

3) State the equation:

(x)(2x) = 49 in^2

4) Solve the equation:

2x^2 = 49 in^s

x^2 = (49/2) in^2

x = √(49/2) in

x = 7√2 / 2 in = 3.5 √2 in

5) Solution:

height = 3.5 √2 in and base = 7√2 in

6) Verification: area = (7√2 in) (3.5√2 in) = 49 in^2

Answer: height = 3.5√2 in and base = 7√2 in.
5 0
3 years ago
Which of the following are like terms?
SVETLANKA909090 [29]

Answer: D) 13y^25 and 2y^25

Like terms involve the same variables, and each of those variables must have the same exponents.

Another example of a pair of like terms would be 5x^3y^2 and 7x^3y^2. Both involve the variable portion "x^3y^2" which we can replace with another variable, say the variable z. That means 5x^3y^2 becomes 5z and 7x^3y^2 becomes 7z. After getting to 5z and 7z, it becomes more clear we have like terms.

5 0
3 years ago
If £2000 is placed into a bank account that pays 3% compound interest per year,
Anastaziya [24]
5500 is the awnser I came up with
5 0
3 years ago
Can someone help me with this please
ryzh [129]

Answer:

y=4

Step-by-step explanation:

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This is a straight horizontal line so the equation is y=4.

Slope=0

4 0
3 years ago
Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
weqwewe [10]

Answer:

19 people

Step-by-step explanation:

To find how many people went to the mall, count each x

At 0 trips, there are 2 xs, so<u> 2</u> people had 0 trips to the mall

At 1 trip, there are 0 xs, so <u>0</u> people had 1 trip to the mall

At 2 trips, there are 10 xs, so <u>10 </u>people had 2 trips to the mall

At 3 trips, there are 7 xs, so <u>7</u> people had 3 trips to the mall

Add up all the xs

2+0+10+7=19

19 people in all

8 0
4 years ago
Read 2 more answers
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