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3 years ago

Select all that justify the following statement. 8•1/8+(-1)+5=5

Mathematics

2 answers:

Lisa [10]3 years ago

7 0

The statments that justify this eqaution would be:

inverse - addition

inverse - multiplication

Ulleksa [173]3 years ago

7 0

Answer:

Option A, F and G are correct.

Step-by-step explanation:

Given the expression

$8.\frac{1}{8}+(-1)+5=5$

We have to select the statement that justify the above expression.

LHS is

$8.\frac{1}{8}+(-1)+5$

$\text{Here, }\frac{1}{8} \text{is the inverse of 8 which is to be multiplied}$

∴ inverse-muliplication

Now, there are 3 terms

1+(-1)+5 which is to be solved

Now, first two are to be added i.e

Associative-addition and commutative-addition takes place.

Hence, option A, F and G are correct.

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As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. If the true percenta

tresset_1 [31]

Answer:

The probability is 0.057797

Step-by-step explanation:

Consider the provided information.

It is given that true percentage of voters who vote for the proposition is 63%,

Let p is probability of success.

According to the binomial distribution:

$P(x;p,n)=^nC_x(p)^x(1-p)^{(n-x)}$

Substitute n=7, p=0.63 and x=2 in the above formula.

$P(x;p,n)=^7C_2(0.63)^2(1-0.63)^{(7-2)}$

$P(x;p,n)=\frac{7!}{2!5!}(0.3969)(0.37)^{5}\\P(x;p,n)=21(0.3969)(0.37)^{5}\\P(x;p,n)=0.0577974947199\\P(x;p,n)\approx0.057797$

Hence, the probability is 0.057797

8 0

3 years ago

Madison and Tanisha went out to lunch. The bill came to $18.94. Madison knows that her lunch cost 9.72. How much did Tanisha's l

Finger [1]

Answer:

Tanisha's lunch cost $9.22.

Step-by-step explanation:

Given that,

Total bill = $18.94

Cost for Madison cost = $9.72

Total cost = Tanisha's lunch + Madison's lunch

18.94 = Tanisha's lunch + 9.72

Tanisha's lunch = 18.94 - 9.72

Tanisha's lunch = 9.22

So, Tanisha's lunch cost $9.22.

4 0

3 years ago

In the following expression which terms can be combined?

joja [24]

the answer is none of the above because the variable cant be combined and 56 cant either.

7 0

3 years ago

Fifty trees grow in a forest. Workers cut down 23 of the trees. Then they plant 38 new ones. After all the cutting and planting,

ololo11 [35]

Answer:

Option A. 65 trees

Step-by-step explanation:

From the question given:

50 trees was in the forest. Then 23 of them were cut down.

The remaining trees = 50 — 23 = 27 trees.

Now 38 new trees were plant.

Total trees after cutting and planting = 27 + 38 = 65 trees

8 0

3 years ago

Read 2 more answers

Write the following products using exponents to express the results in a simpler form. (3 inches)(5 inches) and (5 feet)(2 feet)

Mariulka [41]

Answers:

___________________________________________________________

1) (3 inches)(5 inches) = (3 in)(5 in) = 3 * 5 * in * in = 15 * in * in = " 15 in² " .

___________________________________________________________

2) (5 feet)(2 feet) = (5 ft)(2ft) = 5 * 2 * ft * ft = 10 * ft * ft = " 10 ft² " .

___________________________________________________________

7 0

3 years ago