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lisov135 [29]
3 years ago
8

This is another one helpzzz mee

Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
6 0
I don't know about the first one but the second one is 34.9°. It would be that because are right angles add up to 90° and if you subract 55.1 and 90 it would equal 34.9. But this rule only works on right angles.
liq [111]3 years ago
6 0
4) Is 0-55.1 so, you did it correct
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Sandra throws an object straight up into the air with initial velocity of 38 ft per square from platform that is 30 ft above the
expeople1 [14]

Answer:

3 seconds.

Step-by-step explanation:

We have been given that Sandra throws an object straight up into the air with initial velocity of 38 ft per second from platform that is 30 ft above the ground.

To find the time it will take for object to hit the ground, we will use formula:  

h(t)=-16t^2+v_0t+h_0, where, v_0 represents initial velocity and h_0 represents initial height.

Upon substituting our given initial velocity and initial height, we will get:

h(t)=-16t^2+38t+30

We know that object will hit the ground, when height will be 0, so we will equate object's height equal to 0 and solve for t as:

-16t^2+38t+30=0

Divide by 2:

-8t^2+19t+15=0

Upon using quadratic formula, we will get:

t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{-19\pm\sqrt{19^2-4(-8)(15)}}{2(-8)}

t=\frac{-19\pm\sqrt{361+480}}{-16}=\frac{-19\pm\sqrt{841}}{-16}

t=\frac{-19\pm29}{-16}

t=\frac{-19-29}{-16},t=\frac{-19+29}{-16}

t=\frac{-48}{-16},t=\frac{10}{-16}

t=3,t=-\frac{5}{8}

Since time cannot be negative, therefore, it will take 3 seconds for object to hit the ground.

7 0
3 years ago
when a pair of shoes is sold at 12.5% discount, the selling price is 78.75. Find the original price of the pair of shoes and the
faltersainse [42]
The original price was 90$ so you saved 11.25$
3 0
3 years ago
Please answer this Yall
lora16 [44]
I believe the answer would be b^4.

Explanation:
Use Quotient Rule: x^a/x^b=x^a-b
b^10-6

Then Simplify 10-6 to 4
b^4
5 0
3 years ago
A taxi cab charges a $3.50 flat fee plus a $1.20 fee mile. Write an equation for the total cost, y, after riding for x miles
oksian1 [2.3K]

y = $3.50 + ($1.20/mile)x

8 0
3 years ago
Read 2 more answers
Everyone come view this question
N76 [4]

Answer:

provide an image please

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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