All categories

3 years ago

Which is NOT equivalent to 40+20? A.10(4+2) B.5(8+4) C.4(10+16) D.2(20+10)

Mathematics

2 answers:

SIZIF [17.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

40+20=60

A.10(4+2) = 60

B.5(8+4) = 60

C.4(10+16) = 104

D.2(20+10) = 60

Maru [420]3 years ago

3 0

Answer:C

Step-by-step explanation:

First we find out what 40+20 is which is 60

So now we go through each choice to see if any doesn’t equal 60

A.10(4+2)

10*6=60

B.5(8+4)

5*12=60

C.4(10+16)

4*26=104

D.2(20+10)

2*30=60

As you can see C is 104 not 60 so c is the answer

You might be interested in

1. How many integers are between square root of /5 and square root of /105? Show your work or Explain.

svp [43]

Answer:

10x10 = 100 and 11x11 = 121. Since 100<105<121, 10<square root of 105<11. So the square root of 105 is between 10 and 11.

Step-by-step explanation:

7 0

3 years ago

For the most recent year available, the mean annual cost to attend a private university in the United States was $20,307. Assume

Maksim231197 [3]

Answer:

27,361.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 20307, \sigma = 4275$

Ninety-five percent of all students at private universities pay less than what amount?

This is the 95th percentile, that is, X when Z has a pvalue of 0.95. So X when Z = 1.65.

$Z = \frac{X - \mu}{\sigma}$

$1.65 = \frac{X - 20307}{4275}$

$X - 20307 = 1.65*4275$

$X = 27,361$

So the answer is 27,361.

7 0

3 years ago

Consider a pattern that begins with 180 and each consecutive number is 19 less than the previous term. What are the first five t

Lynna [10]

C is the correct answer. Hope that helped.

4 0

3 years ago

Read 2 more answers

What is the solution of the equation? Square root 2x+13-5=x

borishaifa [10]

Add
5
5
to both sides of the equation.
√
2
x
+
13
=
x
+
5
2
x
+
13
=
x
+
5
To remove the radical on the left side of the equation, square both sides of the equation.
(
√
2
x
+
13
)
2
=
(
x
+
5
)
2
(
2
x
+
13
)
2
=
(
x
+
5
)
2
Simplify each side of the equation.

2
x
+
13
=
x
2
+
10
x
+
25
2
x
+
13
=
x
2
+
10
x
+
25
Solve for
x
x
.

x
=
−
2
,
−
6
x
=
-
2
,
-
6
Exclude the solutions that do not make
√
2
x
+
13
−
5
=
x
2
x
+
13
-
5
=
x
true.
x
=
−
2

8 0

3 years ago

Read 2 more answers

Rewrite the quadratic y=3(x-2)^2-7 in standard form

DochEvi [55]

Answer:

The answer is

y=3/(x-2)^5

8 0

3 years ago