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TEA [102]
3 years ago
10

Solve the equation.

Mathematics
2 answers:
vekshin13 years ago
6 0
<span>4.9x + 4.4 = 19.1
</span><span>4.9x =  19.1 - 4.4
4.9x = 14.7
x = 3

answer is </span><span>B. 3</span>
Bingel [31]3 years ago
6 0
4.9x = 19.1 - 4.4 = 14.7
49x = 147
x = 147 ÷ 49 = 3
B is thus my answer.
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A scientist wishes to estimate the mean breaking strength of a certain type of steel rod within 3.0 psi with 95% confidence. Bas
yaroslaw [1]

Answer:97 rods

Step-by-step explanation:

The number of steel rods for 95% confidence level

n=\left ( \frac{Z_\frac{\alpha }{2}\times \hat{\sigma }}{E} \right )^2

Z_\frac{\alpha }{2}=1.96

E=3

\hat{\sigma }=15

Substituting values

n=\left ( \frac{1.96\times 15}{3}\right )^2

n=96.04\approx 97

Thus 97 rods is tested

6 0
3 years ago
In ΔFGH, what is the measure of &lt; H?
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3 0
3 years ago
you pick one card from a standard deck.What is the probability that the card will be one of the clubs suit?
My name is Ann [436]
The probability is 1/4
8 0
2 years ago
For which real numbers x and y is it true that x + y = x+y?
Alchen [17]
By the general application of cumulative property of addition :

x + y = y + x

For sure
6 0
3 years ago
At least 100 students at a certain high school study Japanese. If 4 percent of the students at the school who study French also
oksano4ka [1.4K]

Answer: Yes, Number of students who study French is greater than number of students who study Japanese.

Step-by-step explanation:

Since we have given that

Number of high school students study Japanese  ≥ 100

Percent of high school students who study French also study Japanese = 4%

If the Percent of the students who Japanese also study French = 10%

So, our equation becomes

0.04\times F=0.10\times J\\\\\dfrac{F}{J}=\dfrac{0.10}{0.04}=\dfrac{10}{4}

With the help of ratio, we get that

Number of students who study French is greater than number of students who study Japanese.

Hence, Yes, Number of students who study French is greater than number of students who study Japanese.

7 0
3 years ago
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