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NeTakaya
2 years ago
9

Please help me if you can

Mathematics
2 answers:
vlada-n [284]2 years ago
8 0
X= 35

How to:
Cross Multiply
Diano4ka-milaya [45]2 years ago
8 0

Answer:

x=35

Step-by-step explanation:

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Could someone do all the problems and/or check my work?
MArishka [77]
11. You’ve done it correctly

12. Let x^2=y
y^2+13y+40=0
(y+8)(y+5)=0
y=8, 5
Since y=x^2
x^2=8 x^2=5
x=+/-√5 x= +/-2√2

13. x^4-x^2-x^2-8=0
x^4-2x^2-8=0
let x^2=y
Y^2-2y-8=0
(y-4)(y+2)=0
y=4, -2
Since y=x^2
X^2=4 X^2=-2
X= +/- 2 This wouldn’t be a real solution

14. It’s pretty much the same process, just substitute y in for x^2. If you’re confused feel free to ask and I can do it, or you can put it through Photomath

15. You’re on the right track so I’m just going to continue from where you left off
x^2(4x+5)-4(x+5)=0
(x^2-4)(4x+5)=0
x= +/- 2 4x=5
x=5/4 or 1 1/4

Hope this helped :)
8 0
3 years ago
Read 2 more answers
Shelia went snowboarding. She spent $118 for the pass and snowboard rental. The snowboard rental cost $25. What percent of the t
padilas [110]
I believe the answer is about 78.81% because you subtract 25 from 118. Then that would be 93. 118 is equal to the 100% and 118 divide by 1.18 equals 100. Divide 93 from 1.18 gives you the answer
5 0
3 years ago
Read 2 more answers
How many radians is 288 degrees?
Oksi-84 [34.3K]

Answer:

5.02655

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the solution to the equation w+6=5w-10
docker41 [41]

Answer:

w = 4

Step-by-step explanation:

you would do this by re-arranging the equation

6 = 5w-10-w (move w to the other side)

6 = 4w-10 (because 5w-w = 4w)

6+10=4w (move 10 to the other side)

16 = 4w (add 6 and 10)

4 = w (divide both sides by 4)

6 0
3 years ago
How to do factor each expression 63 + 81
Katyanochek1 [597]

Answer:

9(7 + 9)

Step-by-step explanation:

To factor an expression you have to first find the highest common factor (HCF) of the numbers in the expression. You divide them by their HCF, bracket it and place the HCF outside the bracket.

63 + 81 =  \\  9(\frac{63}{9}  +  \frac{81}{9})  =  \\ 9(7 + 9)

To check if it is factored properly you can do the opposite of what you just did by clearing the bracket.

9 (7 + 9)

(9 x 7) + (9 x 9)

= 63 + 81

6 0
1 year ago
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