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sergij07 [2.7K]
3 years ago
15

Solve graphically, 2x^2+2x-4=0

Mathematics
1 answer:
alexandr402 [8]3 years ago
5 0
The answer is in the picture below !

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Someone please answer this! THANKSSSS
iren2701 [21]

Answer:

in right angled triangle MNO

relationship between base and hypotenuse is given by cos angle

cosx°=b/h

cosx°=OM/MN

x°=cos-1(26/99)=74.77=74.8°

8 0
2 years ago
Read 2 more answers
A rectangular rug has a perimeter of 220 feet. The width of the rug is two feet less than the length. Find the length and the wi
Gekata [30.6K]

Answer:

The length is 56 and the width is 54.

Step-by-step explanation:

The perimeter of a rectangle is 2x+2y (width and length on both sides). so 2x+2y=220. Also x=y-2, because the width is 2 feet less than the length. Fill x=y-2 in 2x+2y=220 and we get 2(y-2)+2y=220. 2y-4+2y=220. 4y=216. y=54. Fill in y=54 in 2x+2y=220 and we get 2x+2(54)=220. 2x=220-2(54)=112. x=56.

7 0
2 years ago
Suppose that you flip a coin 13 times. What is the probability that you achieve at least 5 tails?
wariber [46]
Heads, or tails. It's 1/2 a chance, because either way you will either land heads or tails. It would be a probability of 1-(1/2)^5. Can you solve that?
5 0
3 years ago
-3y-5=10 Show your work please, thank you.
umka21 [38]

Answer:

-5

Step-by-step explanation:

-3y = 10 + 5

-3y = 15

y = - 5

3 0
2 years ago
Read 2 more answers
in the 9th grade, 7 of every 10 students is a girl. if there are 200 students in the 9th grade, how many of the students are gir
zubka84 [21]

Ratio of girls = 7/10

So, no. of girls = 200 × 7/10 = 20×7 = 140

4 0
2 years ago
Read 2 more answers
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