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3 years ago

Ohhhh please help me I have a really bad grade in math

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

1) C 2) B I hope this helps!

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Evaluate the expression when y = 6 and x = 9<br> x+7y

Sindrei [870]

Sub in the numbers
9 + 7(6)
= 9 + 42
= 51

4 0

2 years ago

Read 2 more answers

It is 1.9 miles from a house to a restaurant and 1.2

stiks02 [169]

9514 1404 393

Answer:

2.2 miles

Step-by-step explanation:

The Law of Cosines can be used to figure this.

c² = a² +b² -2ab·cos(C)

c² = 1.2² +1.9² -2(1.2)(1.9)cos(87°) ≈ 4.811348

c ≈ √4.811348 ≈ 2.193

It is about 2.2 miles across the water from the pier to the restaurant.

7 0

3 years ago

Assume that the random variable X is normally distributed, with mean mu equals 100 and standard deviation sigma equals 20. Comp

TEA [102]

Answer: 0.2119

Step-by-step explanation:

We assume that the random variable X is normally distributed.

Given : Population mean : $\mu=100$

Standard deviation : $\sigma=20$

Z-score : $z=\dfrac{x-\mu}{\sigma}$

Then, z-score corresponds to 116

$z=\dfrac{116-100}{20}=0.8$

By using the standard normal distribution table for z , we have

$P(x>116)=P(z>0.8)=1-P(z\leq0.8)$

$=1-0.7881446\approx0.2119$

Hence, the required probability = 0.2119

4 0

3 years ago

36-9 divided [(0.24*5)+ (0.66*5)]

Ray Of Light [21]

[(0.24*5)+ (0.66*5)] == 4.50
0.24x5 = 1.20
0.66x5 = 3.30
+ ____
4.50

27.00÷4.5 = 0.166666667

4 0

3 years ago

Find the zeroes of the polynomial function f(x)=x^4-5x^3+11x^2-25x+30.

katen-ka-za [31]

Step-by-step explanation:

x⁴ − 5x³ + 11x² − 25x + 30

x⁴ − 5x³ + 6x² + 5x² − 25x + 30

x² (x² − 5x + 6) + 5 (x² − 5x + 6)

(x² + 5) (x² − 5x + 6)

(x² + 5) (x − 2) (x −3)

The zeros are 2, 3, and ±√5i.

7 0

3 years ago