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zmey [24]
2 years ago
13

Please give me the right answer. :)

Mathematics
2 answers:
rosijanka [135]2 years ago
8 0

Answer:

174mm hope this helps Happy Saint Patrick's day

kramer2 years ago
8 0

Answer:

11,340 mm

Step-by-step explanation:

I am really really sorry if im wrong

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What is the image of the point (6,-1) after a rotation of 270 counterclockwise about the origin
Sav [38]

Answer:

(- 1, - 6 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 270°

a point (x, y ) → (y, - x ), thus

(6, - 1 ) → (- 1, - 6 )

4 0
3 years ago
Fx) = -3x² + 2x - 7, then f(-1) =​
Fantom [35]

Given:

The function is

f(x)=-3x^2+2x-7

To find:

The value of f(-1).

Solution:

We have,

f(x)=-3x^2+2x-7

Putting x=-1, we get

f(-1)=-3(-1)^2+2(-1)-7

f(-1)=-3(1)-2-7

f(-1)=-3-9

f(-1)=-12

Therefore, the value of f(-1) is -12.

3 0
3 years ago
A pineapple is 7 times as heavy as an orange. the pineapple also weighs 870 grams more than the orange. what is the total weight
san4es73 [151]
Let's translate each sentence into "Math".

Pineapple = p

Orange = x

is means equal

 

Pineapple is 7 times as heavy as an orange:  p = 7x

Pineapple weighs 870 grams more than orange. p = 870 + x

 

Substitute  p = 7x  into the second equation:

7x = 870 + x

Subtract  x from both sides

6x = 870

divide by 6

x = 145

 

The orange weighs 145 grams.

The pineapple weights 7 times the orange = 7(145) = 1015 grams.

4 0
3 years ago
The average age for a person getting married for the first time is 26 years (U.S. News and World Report, June 6, 1994). Assume t
leva [86]

Answer: 90% of people getting married for the first time get married before age of 31.13.

Step-by-step explanation:

Given : The average age (\mu) for a person getting married for the first time is 26 years (U.S. News and World Report, June 6, 1994).

We assume that  the ages for first marriages have a normal distribution with a standard deviation (\sigma) of 4 years.

Let x be the age before that 90% of people getting married for the first time get married.

From z-table , the value corresponds to p-value of 0.90 is 1.28155.

Formula : z=\dfrac{x-\mu}{\sigma}

1.28155=\dfrac{x-26}{4}\\\\ x-26=4\times1.28155\\\\ x-26=5.1262\\\\ x=5.1262+26=31.1262\approx31.13

Hence, 90% of people getting married for the first time get married before age of 31.13.

5 0
3 years ago
Jenny and her friends are hungry for dessert. They buy $12.25 worth of cookies and ice cream sandwiches. The ice cream sandwiche
Phoenix [80]
If the number of ice cream sandwiches is x

And the number of cookies is y

Then

1.75x + 0.75y = 12.25

and

x + y = 11
y = 11 - x

1.75x + 0.75 (11 - x) = 12.25
1.75x + 8.25 - 0.75x = 12.25
x + 8.25 = 12.25
x = 12.25 - 8.25
x = 4

if x = 4

4 + y = 11
y = 11 - 4
y = 7

x = 4, y = 7
8 0
3 years ago
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