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Ira Lisetskai [31]
2 years ago
10

Find the value of X, rounded to the nearest tenth. A. 31.8 B. 31.4 C. 10.3 D. 10.7

Mathematics
1 answer:
Molodets [167]2 years ago
4 0

Answer:

31.4

Step-by-step explanation:

x=18/sin35

x= 31.38

=31.4(nearest tenth )

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Lady bird [3.3K]

\frac{a + 2}{3}  =  \frac{a - 4}{6}  \\ 6(a + 2) = 3(a - 4) \\ 6a + 12 = 3a - 12 \\ 3a =  - 24 \\ a =  - 8
5 0
3 years ago
Trees planted by a landscaping firm have a 90% one-year survival rate, If they plant 16 trees in a park, what is the following p
irina1246 [14]

Answer:

Pr(all will survive in one year) = 0.35 to 2 decimal places

Pr(at least 8 will survive) = 0.39 to 2 decimal places.

Step-by-step explanation:

Probability of a tree surviving one year is 0.9. While not surviving probability is 1 - 0.9 = 0.1

This is obtained from the 90℅ surviving rate for one year planted by the landscaping firm.

Probability that if 10 trees are planted, all will survive for one year is:

0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9 = 0.9^10 = 0.349

Probability that at least 8 will survive in one year can be expressed as

8 survived x 2 not survived +(or) 9 survived x 1 not survived +(or) 10 survived

= [(0.9^8)x(0.1^2) + (0.9^9)x(0.1^1) + (0.9^10)] = 0.391

Step-by-step explanation:

6 0
3 years ago
Can someone please solve #8
juin [17]

Answer:

Step-by-step explanation:

2x²+7x=-3

2x²+7x+3=0

2x²+x+6x+3=0

x(2x+1)+3(2x+1)=0

(2x+1)(x+3)=0

x=-1/2,-3

so C

8 0
3 years ago
Three times the difference of a number and seven is negative three. Fi<br> nd the number.
postnew [5]
3(x-7)=-3
3x-21=-3
3x=18
x=6
6 0
3 years ago
Help me asap …………..p
borishaifa [10]

Answer:

1.) Tan C = \frac{12}{5}

2.) Sin Z = \frac{24}{26} or \frac{12}{13} if reduced

3.) Cos A = \frac{15}{17}

4.) Cos A = \frac{12}{37}

Step-by-step explanation:

Let's keep in mind that;

Sin = \frac{opposite}{hypotenuse}

Cos = \frac{adjacent}{hypotenuse}

Tan = \frac{opposite}{adjacent}

Hope this helps!

5 0
2 years ago
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