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3 years ago

I need help with these questions it's too hard to fit the problem and question together

Mathematics

1 answer:

Alona [7]3 years ago

6 0

Step-by-step explanation:

I can give you the formulas and how to do it.

The formula for finding the slope is

y²-y¹ all over(divided by) x²-x¹.

You take the order pairs and you label them.

For example, the first one.

(4,2) 4 can be x¹ and 2 can be y¹

(7,6.5) 7 can be x² and 6.5 can be y²

So then you plug it in.

(6.5-2) all over/divided by (7-4)

That ends up being 4.5 over 3. Fraction form.

That is your slope.

Then you plug the slope into the point-slope formula which is

y-y¹=M(x-x¹).

You plug your slope in for M.

You pick either of the given points and plug it in for y¹ and x¹.

Then you solve.

If done right, your formula will end up matching the slope-intercept formula

y=Mx+b.

M is your slope.

b is your y-intercept.

Dont freak out when you start doing it with fractions. Just because it looks wierd, doesnt mean it's wrong.

Use this process for all four.

Hope this helps.

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A ball bearing has mass 0.44 pounds. 1 kg = 2.2 pounds. <br>

torisob [31]

Answer:

(i) 0.2 kg

(ii) kg/cm³

(b) 2.29 kg

Step-by-step explanation:

This problem gives you relations between units, and the formulas for density and mass. It is asking you to make use of these relations in various mass and density calculations.

The relationship between kg and pounds can be used to write a units conversion multiplier. It will have numerator equal to denominator, but will have units such that multiplying by it will give the units you want.

0.44 pounds × multiplier = __ kg

0.44 pounds × (1 kg)/(2.2 pounds) = (0.44/2.2)(1 kg)

0.44 pounds = 0.2 kg

The formula can be used to find the units of interest:

Density = mass/volume

units of density = (units of mass)/(units of volume)

units of density = kg/cm³

Using the given formula with the given value of L, we find the volume to be ...

V = 4(1.40 cm)(3 -1.40 cm)² = 14.336 cm³

Then the mass is ...

mass = volume × density

mass = (14.336 cm³)×(0.160 kg)/(1 cm³) = 2.29376 kg

The mass is about 2.29 kg.

_____

<em>Additional comment</em>

Often you will see density in terms of kg/m³ or g/cm³. Water has a density of about 1 g/cm³ or 1000 kg/m³. The most dense non-radioactive element in the periodic table is osmium, with a density of about 22.6 g/cm³, or 0.0226 kg/cm³. The material in part (b) of this problem has a density about 7 times that, so is clearly not from Earth.

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2 years ago

The relay race is 5 kilometers long. If there are 12 racers

Zigmanuir [339]

Answer:

Step-by-step explanation:

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2 years ago

The lemonade recipe calls for 4 scoops of lemonade powder for each quart of water. Each quart is equivalent to 4 cups. Let n rep

tia_tia [17]

Answer:

B. 5 ≤ n≤ 8

f. 10 ≤ S ≤ 16

C. c=2n

d. S = c

Step-by-step explanation:

Jada is making lemonade for a get together with her friends. She expects a total of 5 to 8 people to be there (including herself).?

She plans to prepare 2 cups of lemonade for each person. The lemonade recipe calls for 4 scoops of lemonade powder for each quart of water. Each quart is equivalent to 4 cups. Let n represent the number of people at the get together, c the number of cups of water, S the number of scoops of lemonade powder. Select all the mathematical statements that repsent the quantities and constraints in the situation.

A. 5<n<8

B. 5≤ n≤8

C. c=2n

d. S = c

e. 10<c<16

f. 10≤S≤16

Let

n = number of people at the get together,

c = number of cups of water,

S = number of scoops of lemonade powder.

She expects a total of 5 to 8 people to be there (including herself).

B. 5 ≤ n ≤ 8

She plans to prepare 2 cups of lemonade for each person.

With minimum of 5 people and maximum of 8 people

2 × 5 = 10

2 × 8 = 16

f. 10≤S≤16

The number of cups of water is twice the number of people at the party

C. c=2n

Number of scoops of lemonade powder is equivalent to number of cups of water

d. S = c

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2 years ago

the outdoor temperature was 8 degrees at midnight the. temperature declined 5 degrees during each. of the next 3 hours what was

LenKa [72]

-7 degrees would be the answer

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3 years ago

57 toys are split into groups of 4 toys. What question do we need to answer here? pls answer quick! this test is already missing

Ilia_Sergeevich [38]

Answer:

im thinking its how many toys you need in each group?

Step-by-step explanation:

8 0

2 years ago

I need help with these questions it's too hard to fit the problem and question together ​

I need help with these questions it's too hard to fit the problem and question together