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attashe74 [19]
3 years ago
13

HII HELP OK THIS ASAP PLS​

Mathematics
2 answers:
Tems11 [23]3 years ago
7 0
The answer is D! I hope this helps youuuuu!
Paha777 [63]3 years ago
3 0

Answer:D

hope this helps

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What is the simplified form of the following expression?
Igoryamba

Answer:

169 is the answer.

Step-by-step explanation:

I used a calculator.

7 0
3 years ago
2x2-3x-5=0 using quadratic formula
saveliy_v [14]
This formula solve by discriminant (D=b^2-4ac)

4 0
3 years ago
Graph the equation to solve the system. y=2x+7 1/2y=x+7/2
vlabodo [156]

Given equation is y=2x+7 and \frac{1}{2}y=x+\frac{7}{2}

Let's simplify the 2nd equation \frac{1}{2}y=x+\frac{7}{2} before we can start graph so that calculation will be easy

\frac{1}{2}y=x+\frac{7}{2}

multiply both sides by 2 to cancel out fractions

2*\frac{1}{2}y=2*x+2*\frac{7}{2}

y=2x+7

which is exactly same as the first equatoin so graph of both will be exactly same and solution will be infinitely many solutions.

y=2x+7 has y-intercept 7 so first point will be (0,7). Slope is 2 so rise 2 unit up then 1 right and graph the new point.


3 0
3 years ago
Suppose 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in r
natta225 [31]

Answer:

D)the time (in hours) a 4-year-old spends unsupervised per day

Step-by-step explanation:

Given that 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in rural areas, considered safe

X - the time (in hours) a 4-year-old spends unsupervised per day

X is N(3,1.8)

P(X

4 0
3 years ago
Solve the proportion.<br> 4<br> y<br> =<br> 7<br> ?<br> y =
Leni [432]

Answer:

y=28/5

Step-by-step explanation:

Okay so for this we can use cross- multiplication. Basically, the product of the numerator of the first number and the denominator of the second is equal to the product of the denominator of the first and the numerator of the second.

What I mean is: 4*7=5*y

so,

28=5y

y=28/5

4 0
3 years ago
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