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4 years ago

What did I do wrong. I thought it was 15

Mathematics

2 answers:

Tatiana [17]4 years ago

8 0

The answer is A. 10 A zebra runs at a pace of 40 MPH while a gazelle runs at a speed of 50 MPH. There is a 10 MPH difference. MPH= miles per hour

CaHeK987 [17]4 years ago

3 0

Its not 15 isnt it 10

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Find the midpoint of the segment with the given endpoints. G(–4, 4) and H(2, 10)

Pavel [41]

The average of those two values is
((-4+2)/2, (4+10)/2) = (-1, 7)

5 0

3 years ago

Read 2 more answers

A) (x + y + 4).(x + y –4)

miv72 [106K]

Answer:

if you want to factorise it answer will be : (x+y)^2 - 4^2

and if you have to expand it anwer will be x^2 + y^2 + 2xy -16

5 0

3 years ago

Look at the picture and plzz help me and also pick from the boxed sentences

poizon [28]

<h2>Hello!</h2>

The answers are:

3. Addition property of equality

4. $6x-7+7=12+7$ - Simplification

7. $x=\frac{19}{6}$

To solve the problem, we need to start with the result of the second step:

$6x-7=12$

So,

For the step 3:

Then, for the 3rd step, we have to apply the addition property of equality.

The addition property of equality states that if we add a term to one side of the equality, we need to add it to the other side of the equality, in order to not alterate the equality.

Then, applying the property, we have:

$6x-7=12$

Adding 7 to both sides, we have:

$6x-7+7=12+7$

For the step 4:

Now, for the 4th step, we have to simplify the expression:

$6x-7+7=12+7$

Then, simplifying, we have:

$6x=19$

For the step 7:

Simplificating, we divide each side of the equality by 6:

$\frac{6x}{6}=\frac{19}{6} \\\\x=\frac{19}{6}$

Have a nice day!

3 0

4 years ago

HELP!!! Cumulative Exam!! Which is the simplified form of m Superscript negative 8 p Superscript 0? StartFraction 1 Over m Super

lyudmila [28]

Answer:

(B) $\dfrac{1}{m^8}$

StartFraction 1 Over m Superscript 8 EndFraction

Step-by-step explanation:

We want to find the simplified form of: $m^{-8}p^0$

$m^{-8}p^0=m^{-8}$ X p^0\\p^0=1\\m^{-8}=\frac{1}{m^8} \\$Therefore:\\m^{-8}$ X p^0=\dfrac{1}{m^8} X 1\\=\dfrac{1}{m^8}$

The correct option is B.

3 0

4 years ago

1. A certain manufacturing process to build phone batteries results in the production of defective batteries at a rate of 5% (0.

lesya [120]

Answer:

0.5 ; 0.475 ; 0.689 ; 0.4013

Step-by-step explanation:

Given that:

Rate of production of defective batteries p = 0.05

Number of batteries produced (n) = 10

The expected number of defective batteries = mean = n * p = 10 * 0.05 = 0.5 batteries

Variance of defective batteries :

Var(X) = n * p * q ; q = 1 - p

Hence,

Var(X) = 10 * 0.05 * 0.95 = 0.475

Standard deviation (X) = sqrt(variance) = sqrt(0.475) = 0.689

Probability that atleast 1 battery is defective :

Using the binomial probability function

P(x ≥ 1) = 1 - p(x = 0)

= 1 - q^n

= 1 - 0.95^10

= 1 - 0.59873693923837890625

= 0.40126306076162109375

= 0.4013

7 0

3 years ago