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3 years ago

Which number is missing from the table of equal ratios?

Mathematics

2 answers:

ziro4ka [17]3 years ago

7 0

Answer:

C .......................

Elodia [21]3 years ago

3 0

Answer:

your answer is option (c) 105

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HELP? I don't understand at all!!

ivanzaharov [21]

I do not know at all I am sorry

8 0

3 years ago

Best Answer Gets Brainliest Please help asap

FrozenT [24]

<h2>Answer:</h2>

[1] Area of base = 13 × 13 = 169in².

Area of faces = 4 (1/2 × 13 × 8) = 208in².

Surface area = (169 + 208)in² = 377in².

[2] Area of base = 1/2 × 5.2 × 4.5 = 11.7in².

Area of faces = 3 (√3/4 × 5.2²) = 35.1in².

Surface area = (35.1 + 11.7)in² = 46.8in².

[3] Area of base = 7 × 10 = 70in².

Area of faces = 2(1/2 × 7 × 6) + 2(1/2 × 10 × 4.8)

= 98in².

Surface area = (70 + 98)in² = 168in².

7 0

3 years ago

The regular price of a digital camera was 250$. Tristan bought the digital camera at a discount of 40%. How much did Tristan pay

enot [183]

Answer:

$150

Step-by-step explanation:

convert the percent to decimal, 0.40, then multiply it by 250 to get 100, then subtract, 250-100=$150

3 0

3 years ago

Read 2 more answers

Help me find the area of this

zzz [600]

Answer:

A1=LW A2=½bh

=10×8 =½×7×10

= 180 =35

At=A1+A2

=180+35

=215

7 0

2 years ago

Read 2 more answers

A simple random sample with n = 58 provided a sample mean of 24.5 and a sample standard deviation of 4.4. (Round your answers to

nasty-shy [4]

Answer: (23.53, 25.47)

Step-by-step explanation:

The confidence interval for population mean(when population standard deviation is unknown) is given by :-

$\overline{x} \pm\ t^*\dfrac{s}{\sqrt{n}}$

, where $\overline{x}$ = sample mean

n = sample size.

s = sample standard deviation.

t* = Critical value.

Given : $\overline{x}=24.5$

s= 4.4

Confidence level = 90% =0.090

Significance level = $\alpha=1-0.90=0.10$

Sample size : n= 58

Degree of freedom : df= n-1= 57

Using t-distribution table , the critical value :

$t_{\alpha/2,\ df}= t_{0.05,\ 57}=1.6720$

Then, the confidence interval will be :-

$24.5 \pm\ (1.6720)\dfrac{4.4}{\sqrt{58}}$

$24.5 \pm\ (1.6720)\dfrac{4.4}{7.61577310586}$

$24.5 \pm\ 0.965995165263\approx24.5\pm0.97\\\\=(24.5-0.97,\ 24.5+0.97)\\\\=(23.53,\ 25.47)$

Hence, a 90% confidence interval for the population mean = (23.53, 25.47)

6 0

3 years ago