All categories

2 years ago

9 + [10 + (5 - 4) x 2] please use pemdas and write 3 steps

Mathematics

1 answer:

N76 [4]2 years ago

4 0

Answer:

Step-by-step explanation:

9+[10+(5-4)x2]

= 9+(10+1x2)

= 9+(10+2)

= 21

You might be interested in

How many terms are in the expression? 9a + 6b + 3c + 1 A) 1 B) 2 C) 3 D) 4

Kaylis [27]

Answer:

D.) there is 9a and 6b ,3c and 1 thats four different terms

Step-by-step explanation:

Have a nice day! :D

7 0

2 years ago

A bank sampled its customers to determine the proportion of customers who use their debit card at least once each month. A sampl

Zinaida [17]

Answer:

(0.084,0.396)

Step-by-step explanation:

The 99% confidence interval for the proportion of customers who use debit card monthly can be constructed as

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$p=\frac{x}{n}$

$p=\frac{12}{50}$

$p=0.24$

$q=1-p=1-0.24=0.76$

$\frac{\alpha }{2} =\frac{\0.01 }{2}=0.005$

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$0.24-z_{0.005} \sqrt{\frac{0.24*0.76}{50} }$

$0.24-2.58(0.0604)$

$0.24-0.155832$

By rounding to three decimal places we get,

$0.084$

The 99% confidence interval for the proportion of customers who use debit card monthly is (0.084,0.396).

3 0

3 years ago

I want a skater bf. so i can skate w him smh

Nookie1986 [14]

Answer: um 86%

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Okay so- I picked the yellow one and I don’t know if I’m correct?

Maksim231197 [3]

Answer:

I answered it for u before :D

4 0

2 years ago

Question:

alexandr1967 [171]

Answer:

Part 1) The draw in the attached figure

Part 2) $m\angle ABD=50^o$

Step-by-step explanation:

Part 1) Draw the described circle

The draw in the attached figure

Part 2) What is the measure of angle ABD

step 1

Find the measure of arc AD

Remember that

$arc\ AD+arc\ DC+arc\ AC=360^o$ ----> by complete circle

substitute the given values

$arc\ AD+124^o+68^o=360^o$

$arc\ AD=360^o-192^o=168^o$

step 2

Find the measure of angle ABD

we know that

The measurement of the external angle is the half-difference of the arches that comprise

In this problem

The measure of angle ABD is an external angle

$m\angle ABD=\frac{1}{2} [arc\ AD-arc\ AC]$

substitute the given values

$m\angle ABD=\frac{1}{2} [168^o-68^o]=50^o$

5 0

3 years ago