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2 years ago

Evaluate the expression. [(8 x 7) – 2): 9

Mathematics

1 answer:

frozen [14]2 years ago

6 0

Answer:

☑ Answer is 6

Step-by-step explanation:

${ \tt{ \{(8 \times 7) - 2 \} : 9}} \\ = { \tt{(56 - 2) :9 }} \\ = { \tt{54 :9 }}$

» But this is a ratio, so it can be expressed in terms of fractions:

$= { \tt{ \frac{54}{9} }} \\$

» Divide both the denominator and numerator by 9:

${ \tt{ = \frac{54 \div 9}{9 \div 9} }} \\ \\ = { \tt{ \frac{6}{1} }} \\ \\ = 6$

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Calculate GPA of following student. Answer using 4 decimal digits

Mamont248 [21]

Answer:

Step-by-step explanation:

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3 years ago

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G two samples, one of size 14 and the second of size 13, are selected to test the difference between two population means. how m

vovikov84 [41]

Note :- If sample size n > 30 OR Population standard deviation σ is given then We use Z test.

If sample size n < 30 AND Population standard deviation σ is unknown then we use t test.

In this question we are not given Population standard deviations σ1 and σ2.

Also n1 = 14 and n2 = 13 both sample sizes are LESS than 30.

Therefore we use t test.

Given :- Assume the population standard deviations are equal. ( σ1 = σ2)

then Degrees of freedom = n1 + n2 - 2 = 14 + 13 - 2 = 25.

(kindly find the image attached with this solution)

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3 years ago

I WILL GIVE BRAINLY!!!!!!!!!

kenny6666 [7]

Answer: C. 5(6) + 0.65y

Step-by-step explanation:

Process of elimination.

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B has 6y, also completely incorrect.

C has 0.65y, correct.

D has 1.65y, also completely incorrect.

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3 years ago

Hey what's the answer <img src="https://tex.z-dn.net/?f=%20-%2011a%283a%20%2B%202a%29" id="TexFormula1" title=" - 11a(3a + 2a

allsm [11]

Answer:

$- 11a(3a + 2b) \\ = - 11 \times 3 \times a \times a + ( - 11 \times 2 \times a \times a) \\ = - 33 {a}^{2} - 22ab$

I hope it helps

have a great day

$#Liliflim✌️$

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2 years ago

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Ben ran 3/10 of a mile. Shelly ran 8/10 of a mile. How many more miles did Shelly run than Ben? A) 11/10 B) 11/20 C) 5/0 D) 5/10

attashe74 [19]

Hello there! Shelly ran D) 5/10 more miles than Ben.

To find the difference between the two runner's distances, subtract the smaller distance from the greater distance.

8/10 - 3/10 = 5/10

Since there is a difference of 5/10, this means Shelly ran 5/1 more miles.

I hope this helps, & have a great rest of your day! :)

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3 years ago

Evaluate the expression. [(8 x 7) – 2): 9​

Evaluate the expression. [(8 x 7) – 2): 9