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ehidna [41]
3 years ago
14

HELP! I am REALLY struggling!

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
7 0
16 = 1/4x + 2.5...where x stands for diameter of large gear
16 - 2.5 = 1/4x
13.5 = 1/4x....multiply both sides by 4, eliminating the 1/4 on the right side
13.5 * 4 = x
54 = x.....the large gear is 54 cm
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Help with the question below plz <3
beks73 [17]

Hello!

Let's plug our x-value of 6 into each expression, evaluate our expression, and compare them using an inequality, which will be our answer.

9(4)-2(6)

36-12

24

2(9-6)

2(3)

6

As you can see, this gives us 24_6. As you can see, 24 is greater, so we will use the > inequality, giving us 24>6.

Therefore, our answer is B) >.

I hope this helps!

3 0
3 years ago
Read 2 more answers
A store sells cheese in half a pound package a recipe calls fpr 1.72 pound of cheese how many packages does the chef need
Sedbober [7]

Answer:

4 packages

Step-by-step explanation:

Since the store sells by 1/2 packages, we have to round 1.72 UP to 2.00. Then we multiply 1/2pound by 4= 2.00 pounds

4 0
3 years ago
Need help trigonometry<br>​
pochemuha

Answer:

The measure of angle F is 67.6°

Step-by-step explanation:

In the right triangle DEF

∵ ∠E is the right angle

∵ Side DF is opposite to ∠E

∴ DF is the hypotenuse of the triangle DEF

∵ Side EF is the adjacent side of ∠F

∵ The cosine ratio = \frac{Adjacent}{Hypotenuse}

∴ cos∠F = \frac{EF}{DF}

∵ EF = 8 units

∵ DF = 21 units

→ Substitute them in the cosine ratio above

∴ cos∠F = \frac{8}{21}

→ Use cos^{-1} to find the measure of angle F

∵ m∠F = cos^{-1}(\frac{8}{21})

∴ m∠F = 67.60731219 degrees

→ Round it the nearest tenth of a degree

∴ m∠F = 67.6°

∴ The measure of angle F is 67.6°

3 0
3 years ago
What is the height of a cone if the radius is 3 and the volume is 40π
SOVA2 [1]
Is the 3 inch or what but if it is it’s
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3 0
2 years ago
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g100num [7]
To solve this we are going to use the formula fro the force applied to a spring: F=ks
where
k is the spring constant 
s is the extension 

Since we know the F=ma, we can replace that in our formula and solve for a :
ma=ks
a= \frac{ks}{m}
where
a is the acceleration 
k is the spring constant
s is the extension 
m is the mass

We know for our problem that k=200, s=0.4, and m=25. So lets replace those values in our formula to find a:
a= \frac{ks}{m}
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a=3.5 \frac{m}{s^2}

We can conclude that the acceleration of the block when s=0.4m is 3.5 \frac{m}{s^2}.
7 0
3 years ago
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