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3 years ago

Simplify using the order of operations (PEMDAS) 20 ÷÷4(-5) + (-3)

Mathematics

1 answer:

cricket20 [7]3 years ago

3 0

Answer:

the answer is −28

Step-by-step explanation:

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Help me this one out, pls?

Flura [38]

Answer:

∠ACD= 109°

Step-by-step explanation:

∠A=38

180- ∠A= ∠B+C

180-38= 2∠B( ∠B=∠C) ( angles opposite to equal sides are equal)

142=2∠B

∠B=71

∠ACD=∠A+∠B ( exterior angle property)

∠ACD= 38+ 71= 109°

4 0

3 years ago

Find the roots.<br> 2x 2 + 7x-15 =0

liq [111]

set 2x-3 equal to 0 and solve for x

x=3/2

set x+5 equal to 0 and solve for x

x=-5

the solution is the result of 2x-3=0 and x+5=0

x=3/2,-5

plz mark me as brainliest :)

3 0

3 years ago

The amount dispensed by a soft-drink dispensing machine has a normal distribution with mean μ and standard deviation 0.191 ounce

nirvana33 [79]

Answer:

The value of mean is $\mu = 15.64$

Step-by-step explanation:

The normal distribution of the soft-drink dispensing machine can be stated statistically like

$X$ ~ $N (\mu ,0.191^2)$

The standard form representation is

$P(X$

Now we need to obtain $\mu$ in such a way that

$P(X>16) = 0.01$

In standard form

Since

$P(Z>16 -\frac{\mu}{0.191} ) = 0.03$

This means

$P(Z$

Now looking at the z-table for probability of 0.99 we obtain 1.88

i.e

$16 - \frac{\mu}{0.191} = 1.88$

Making $\mu\ the \ subject$

$16 - \mu = 1.88 *0.191$

$\mu = 16 -(1.88*0.191)$

$=15.64$

8 0

3 years ago

5 times as mush as 7 tenths

laiz [17]

The answer to that would be 7/2.

7 0

3 years ago

Distribute<br> 5(-4x+6) pls help!!

Dovator [93]

Answer:

-20x+30

Step-by-step explanation:

Here ya go. Hope I helped

6 0

3 years ago

Read 2 more answers