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3 years ago

I need help plz I don't understand it this is the whole problem

Mathematics

1 answer:

Elenna [48]3 years ago

6 0

a- b-4 because you switch the places when it says fewer than, or less than

b-12f

c-s+8

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What property is this 19=2x-7 26=2x <br> Urgent there is no multiple choice

Nonamiya [84]

Answer: Addition Property of Equality

We add 7 to both sides to go from 19 = 2x-7 to 26 = 2x

4 0

4 years ago

Hullan's age is three times Thomas's age. The sum of their ages is 92. What is Thomas's age?

Ksju [112]

Answer: 23

Step-by-step explanation: You can start by setting this up as an equation like so,

X + 3(X) =92 where x is Thomas’ age and the 3x indicates Hullans age being 3 times greater than Thomas.

Combine the x’s

4(x) = 92

Divide by 4 X = 92/4

92/4 = 23, x = 23

7 0

3 years ago

Suppose an isosceles triangle abc has a=pi/4 and b=c=4. What is the length of a^2?

Zanzabum

The law of cosines states that, if $\alpha$ is the angle between sides b and c,

$a^2 = b^2+c^2-2bc\cos(\alpha)$

So, plugging our values, we have

$a^2 = 16+16-2\cdot 4\cdot 4\cdot\cos\left(\dfrac{\pi}{4}\right)$

This is equal to

$a^2 = 32-32\cdot\dfrac{\sqrt{2}}{2} = 32-16\sqrt{2}$

3 0

3 years ago

About 12% of individuals write with their left hands. If a class of 130 students meets in a classroom with 130 individual desks,

Lynna [10]

Answer:

0.1019

Step-by-step explanation:

Probability, p=12%=0.12

Sample size, n=130 students

Those writing with left=14 students

Using the formula for binomial distribution

P(X≤x)= $\left[\begin{array}{}n\\x\end{array}\right]p^{x}(1-p)^{n-x}$

Substituting 0.12 for p, 130 for n, 14 for x we obtain

P(X≤x)= $\left[\begin{array}{}130\\14\end{array}\right]0.12^{14}(1-0.12)^{130-14}$

P(X≤x)= $130C14*0.12^{14}(0.88)^{116}$

P(X≤x)=0.1019

3 0

3 years ago

Mallorie has 3$ in her wallet. If this is 10% of her monthly allowance, what is her monthly allowance

Mamont248 [21]

Answer:

Step-by-step explanation:

Write 10% as a decimal then divide 3 by 0.1 (10% as a decimal)

hope this is good owo

8 0

3 years ago