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2 years ago

15

I tried this and found it really difficult please help

1 answer:

IrinaK [193]2 years ago

6 0

Answer:

4.75 or 4 3/4

Step-by-step explanation:

Since all values are given, we can substitute all the values into the equation to find s.

s = $ut+\frac{1}{2} at^{2} \\= (10)(\frac{1}{2}) +\frac{1}{2} (-2)(\frac{1}{2}) ^{2}\\=5 + (-1)(\frac{1}{4} )\\=5+(-\frac{1}{4} )\\=5-0.25\\=4.75 or 4\frac{3}{4}$

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A group of dental researchers are testing the effects of acidic drinks on dental crowns. They have five containers of crowns lab

mestny [16]

Answer:

$\begin{array}{cccccc}{x} & {V} & {W} & {X} & {Y} & {Z} & P(x) & {0.20} & {0.20} & {0.20} & {0.20} & {0.20} \ \end{array}$

Step-by-step explanation:

Given

$S = \{V,W,X,Y,Z\}$

$n(S) = 5$

Required

The probability model

To do this, we simply calculate the probability of each container.

So, we have:

$P(V) = \frac{n(V)}{n(S)} = \frac{1}{5} = 0.20$

$P(W) = \frac{n(W)}{n(S)} = \frac{1}{5} = 0.20$

$P(X) = \frac{n(X)}{n(S)} = \frac{1}{5} = 0.20$

$P(Y) = \frac{n(Y)}{n(S)} = \frac{1}{5} = 0.20$

$P(Z) = \frac{n(Z)}{n(S)} = \frac{1}{5} = 0.20$

So, the probability model is:

$\begin{array}{cccccc}{x} & {V} & {W} & {X} & {Y} & {Z} & P(x) & {0.20} & {0.20} & {0.20} & {0.20} & {0.20} \ \end{array}$

5 0

2 years ago

What is 0.40506100 in scientific notation

Olenka [21]

Answer:

4.0506100 x 10^-1

Step-by-step explanation:

Because all you need to do is move the decimal point to the right once, you write 10^-1 to show that to get back to the original number, you just multiply 4.0506100 by -0.1

7 0

3 years ago

APQR is inscribed in a circle with P=60, Q = 80, and R = 40. What are the measures of PQ, QR, and PR?

Sergeeva-Olga [200]

Answer:

PQ:80

QR:160

PR:120

Step-by-step explanation:

$PQ=2x$ ∠ $R$

$=2$ × $40$

= $80$

$QR=2$ × $m$ ∠ $p$

$=20$ × $80$

$=160$

$PR=2$ × $m$ ∠ $Q$

= $2$ × $60\\$

= $120$

<em>hope it helps </em>

<em>have a great day!!</em>

5 0

2 years ago

Highest Common Factor of 27 and 36.

QveST [7]

Answer:

9

Step-by-step explanation:

listing the factors

27 : 1, 3, 9, 27

36 : 1, 2, 3, 4, 9, 12, 18, 36

the common factors are 1, 3, 9

the highest common factor is 9

8 0

1 year ago

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What is a polygon? Giving brainliest

Charra [1.4K]

Step-by-step explanation:

a polygon is a plane figure that is described by finite number of line segments....

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2 years ago