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seropon [69]
3 years ago
10

Solve the equation by the square root (7x+4)^2=4

Mathematics
1 answer:
hjlf3 years ago
4 0

Step-by-step explanation:

(7x+4)^2 = 4

7x^2 + 4^2 = 4

49x + 16 = 4

-16 -16

49x = -12

--- ----

49 49

x= 4.0

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How many times does 13 go in to 33
Gelneren [198K]
2 times at the most……..
6 0
2 years ago
3 In which of these pairs of numbers would both numbers round to 6.23 ? F 6.232 and 6.236 G 6.231 and 6.233 H 6.229 and 6.239 J
tatiyna

9514 1404 393

Answer:

  G 6.231 and 6.233

Step-by-step explanation:

F 6.232 and 6.236 rounds to 6.23, 6.24

G 6.231 and 6.233 rounds to 6.23, 6.23

H 6.229 and 6.239 rounds to 6.23, 6.24

J 6.222 and 6.238 rounds to 6.22, 6.24

_____

One way to determine the rounded value is to add 0.005 to the number, then drop all digits to the right of the hundredths place.

<u>Examples</u>:

  6.222 +0.005 = 6.227 ⇒ 6.22

  6.238 +0.005 = 6.243 ⇒ 6.24

5 0
3 years ago
What is the simple form of the radical equation sqrt of 27x^4/75y^2
omeli [17]
We are given with the radical expression
√(27 x⁴ / 75 y²)
we can simplify this by dealing with the fraction first
√(27 x⁴ / 75 y²) = √( 9 x⁴ / 25 y²)
Then, take the square root of the coefficients and the variables
= 3x² / 5y<span />
8 0
3 years ago
How do i find all the missing angles, a b c d e I HAVE TO TURN IT IN SOON AA
castortr0y [4]

Step-by-step explanation:

for a

  • a+,38°=90°{ angle at circumference through center is 90°}
  • a=90-38
  • a=52°

for e

  • e=38°{base angle of isosceles triangle r equal}

for d

  • 38°+e+d=180°{sum of angle of triangle}
  • d=180-76
  • d=104°

for. c

  • c+d=180°{straight angle}
  • c=180-104°
  • c=76°

for b

  • a+b+c=180°{sum of angle of triangle}
  • b=180-128
  • b=52°

hope it helps.

<h2>stay safe healthy and happy.</h2>
4 0
3 years ago
A students cost for last semester at her community college was $2500. She spent $475 of that on books.what percent of last semes
max2010maxim [7]
It is 19%!! :) an explanation is:
We assume, that the number 2500 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 2500, so we can write it down as 100%=2500.
4. We know, that x% equals 475 of the output value, so we can write it down as x%=475.
5. Now we have two simple equations:
1) 100%=2500
2) x%=475
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=2500/475
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 475 is what percent of 2500

100%/x%=2500/475
(100/x)*x=(2500/475)*x - we multiply both sides of the equation by x
100=5.2631578947368*x - we divide both sides of the equation by (5.2631578947368) to get x
100/5.2631578947368=x
19=x
x=19

now we have:
475 is 19% of 2500
7 0
4 years ago
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