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2 years ago

Referring to the scale, 1:50 what is the actual measurement of the wall marked 18 cm on the plan?

Mathematics

1 answer:

vfiekz [6]2 years ago

4 0

Answer:

900 cm

Step-by-step explanation:

1 : 50

We need the first number to be 18 so multiply by 18

1:18 : 50*18

18 cm : 900 cm

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What is the quotient in simplified form? State any restrictions on the variable. Show Work.

photoshop1234 [79]

a+2 a +1
= ------- / ------------------
a -5 (a - 3)(a - 5)

a+2 (a - 3)(a - 5)
= ------- * ------------------
a -5 a +1

(a+2)(a - 3)
= ----------------
a +1

a NOT equal 5 and -1

5 0

2 years ago

Read 2 more answers

A car goes 400 miles on 10 gallons of

Olenka [21]

Answer:

A. 1200

Step-by-step explanation:

Since 10 times 3 is 30, then 400 times 3 is 1200. Hope I helped!

4 0

3 years ago

insurance company checks police records on 559 accidents selected at random and notes that teenagers were at the wheel in 91 of

ss7ja [257]

Answer: $(13.22\%,\ 19.34\%)$

Step-by-step explanation:

Given : Sample space : n= 559

Sample proportion : $\hat{p}=\dfrac{91}{559}=0.162790697674\approx0.1628$

$=16.28\%$

Significance level : $\alpha= 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Confidence level for population proportion:-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.1628\pm (1.96)\sqrt{\dfrac{0.1628(1-0.1628)}{559}}\\\\=0.1628\pm0.030604971367\\\\\approx 0.1628\pm0.0306=(0.1322,\ 0.1934)=(13.22\%,\ 19.34\%)$

Hence, 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.= $(13.22\%,\ 19.34\%)$

7 0

3 years ago

What is expanded form for 93,472,810

egoroff_w [7]

90,000,000+300000+400000+700000+2000+800+10

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3 years ago

The fish tank at Matthew's house holds 468 gallons but is leaking at a rate of 4 gallons per day. Ariana's fish tank holds 624 g

user100 [1]

468 plus 624 times 7 divided by 4 and you should get the amount of water in the two tanks

6 0

2 years ago