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sergeinik [125]
3 years ago
13

Which is another way to write 7 × 10 = 70? A. 70 = 2 × 7 × 5 B. 70 = 2 × 7 × 10 C. 70 = 3 × 5 × 5 D. 70 = 3 × 4 × 10

Mathematics
2 answers:
Vesna [10]3 years ago
8 0
The answer is a.
Hope this helped :)
Art [367]3 years ago
6 0
The answer is A it is right
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Please help me guys!!! Value of X?
Arturiano [62]
The value of X is 56.66°. The sine of X (opposite/hypotenuse) is 66mm/79mm. When finding angle measurements, you would use sin−1 instead of sin, which is used for finding side lengths. So, X= sin−1(66/79). This then results to 56.66° after using the trig functions in a calculator.

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3 years ago
Suppose a sociologist studying the sleep habits of teenagers in the U.S. randomly surveyed 1873 teenagers. Of those, 297 teenage
dem82 [27]
\hat{p}=p\pm\frac{\sqrt{p(1-p)}}{\sqrt{n}}\\p=\frac{297}{1873}=0.1586\\ \hat{p}=0.1586\pm\frac{\sqrt{0.1586(1-0.1586)}}{\sqrt{1873}}\\=0.1586\pm\frac{\sqrt{0.1586(0.8414)}}{43.2782}}\\=0.1586\pm\frac{\sqrt{0.1334}}{43.2782}}\\=0.1586\pm\frac{0.3653}{43.2782}}\\=0.1586\pm0.0084
5 0
3 years ago
Solve for x. And graph 7(3x+4)+2<156
blsea [12.9K]

7(3 \times x + 4) + 2 < 156 \\ 21 \times x + 28 + 2 < 156 \\ 21 \times x + 30 < 156 \\ 21 \times x < 156 - 30 \\ 21 \times x < 126 \\ x  <   \frac{126}{21}  \\ x < 6

8 0
3 years ago
W=zr-2zt^3 solve for z
ladessa [460]

Answer: z=0

Step-by-step explanation:

W=zr-2zt^3

Move all terms containing z to the left, all other terms to the right.

dd '-1rz' to each side of the equation.

-1rz+z=rz+-1rz+-2t^3z

Combine like terms: rz + -1rz = 0

-1rz+z=0+(-2t^3z)

-1rz+z=-2t^3z

Add 2t^3z to each side

-1rz+2t^3z+z=-2t^3z+2t^3z

Combine the like terms 2t^3z+2t^3z=0

-1rz+2t^3z+z=0

Factor out the Greatest Common Factor (GCF), 'z'.

z(-1r+2t^3+1)=0

Hope this helps, HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

8 0
3 years ago
The equation of a circle is given below.<br> What is its center?
svp [43]

Answer:

( \frac{2}{3}, 0)

Step-by-step explanation:

The general equation for a circle is

{(x - a) }^{2}  + {(y - b) }^{2}  =  {r}^{2}

Where a and b are the x and y values of the centre. So comparing to your equation you can see that a is 2/3 and b is 0

6 0
3 years ago
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