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2 years ago

I need help with this question

Mathematics

2 answers:

OverLord2011 [107]2 years ago

7 0

if the lower pointvis 56 the dot line will be 55.5

Fed [463]2 years ago

3 0

Answer:

-55.5

Step-by-step explanation:

There are 4 spaces between -56 and -54 (2 units), so each space represents 2/4 = 1/2 = 0.5 unit. The markings increase as you go upward, so the value at the dot, 1 space above -56, is ...

-56 +0.5 = -55.5

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A ball is thrown directly up in the air from a height of 5 feet with an initial velocity of 60 ft/s. Ignoring air resistance, ho

Mice21 [21]

Answer:

3.8 seconds

Step-by-step explanation:

Given equation

$h= -16t^2 + 60t + 5$

When the ball hits the ground then height is 0

So we replace h with 0 and solve for t

$0= -16t^2 + 60t + 5$

a= -16 , b= 60 and c= 5

Apply quadratic formula to solve for t

$t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

= $\frac{-60+\sqrt{60^2-4\left(-16\right)\cdot \:5}}{2\left(-16\right)}[/tex[tex]=\frac{-60+-\sqrt{3920}}{-32}$

$=\frac{-60+-28\sqrt{5}}{-32}$

$=\frac{4(-15+-7\sqrt{5})}{-32}$

$=\frac{(-15+-7\sqrt{5})}{-8}$

Now make two fractions and solve for x

t= $-\frac{7\sqrt{5}-15}{8}$ =-0.0815

t= $\frac{7\sqrt{5}+15}{8}$ =3.83

So answer is 3.8 seconds

4 0

3 years ago

How many 150 ml bottles can be filled with 6 litres/

lara31 [8.8K]

Answer:

40 bottles

Step-by-step explanation:

6liters=6000ml so I do 6000/150=40.Therfore 40 bottle of 150ml can fill a bottle wth 6 literes

AND SORRY FOR BAD GRAMMAR BUT I HOPE IT HELPS!!

4 0

2 years ago

The perimeter of the isosceles triangle shown is 53 cm. What is the value of x?<br><br>

dangina [55]

Answer:

21 cm

Step-by-step explanation:

Since this is an isosceles triangle, the two sides with a line through them must have the same value of x. Therefore, you can set up the following equation:

2x+11=53

2x=42

x=21 cm

Hope this helps!

7 0

3 years ago

Read 2 more answers

I don’t quite understand how to solve question 1-A.

sineoko [7]

Answer:

for every 1000 people, the maximum noise level goes up by 1.5

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