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3 years ago

Why is x =6 A solution to the proportion 192/36 = 32/×

Mathematics

2 answers:

lorasvet [3.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

Because if you substitute 6 into the equation for x and cross multiply, you get 1,152 = 1,152

Georgia [21]3 years ago

4 0

$\dfrac{32}{x}=\dfrac{192}{36}\qquad\text{cross multiply}\\\\192x=(32)(36)\qquad\text{divide both sides by 192}\\\\x=\dfrac{1152}{192}\\\\\boxed{x=6}$

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It triples in size every 4 days. In 16 days it will be 3 * 3 * 3 * 3 times bigger.

3 * 3 * 3 * 3 = 81
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3 years ago

A bank charges a fee if your account balance falls below $50. Let b represent the account balance. Write an inequality to descri

Paraphin [41]

Answer:

b < 50. The solution has infinite solutions because any number smaller than 50 would work, and their are infinite numbers smaller than 50.

Step-by-step explanation:

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3 years ago

A different map has a scale of 1:50000

Deffense [45]

Answer:

8 Km

Step-by-step explanation:

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3 years ago

An article in Knee Surgery, Sports Traumatology, Arthroscopy, "Arthroscopic meniscal repair with an absorbable screw: results an

igomit [66]

Answer:

Mean = 1.57

Variance=0.31

Step-by-step explanation:

To calculate the mean and the variance of the number of successful surgeries (X), we first have to enumerate the possible outcomes:

1) Both surgeries are successful (X=2).

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3) Right knee unsuccessful and left knee successful (X=1).

$P(e_3)=0.90*(1-0.67)=0.9*0.33=0.297$

4) Both surgeries are unsuccessful (X=0).

$P(e_4)=(1-0.90)*(1-0.67)=0.1*0.33=0.033$

Then, the mean can be calculated as the expected value:

$M=\sum p_iX_i=0.603*2+0.067*1+0.297*1+0.033*0\\\\M=1.206+0.067+0.297+0\\\\M=1.57$

The variance can be calculated as:

$V=\sum p_i(X_i-\bar{X})^2\\\\V=0.603(2-1.57)^2+(0.067+0.297)*(1-1.57)^2+0.033*(0-1.57)^2\\\\V=0.603*0.1849+0.364*0.3249+0.033*2.4649\\\\V=0.1115+0.1183+0.0813\\\\V=0.3111$

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3 years ago

When debby's 3ds is fully charged it last for 8 hours. if she only charged it 3/5 full how long did it last her?

Luba_88 [7]

8*3/5=4.8 hours

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7 0

3 years ago

Read 2 more answers