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3 years ago

Please help me idk this

Mathematics

2 answers:

Nikolay [14]3 years ago

6 0

Answer:

Step-by-step explanation:

81/90= 9/ 10. sorry if i got it wrong

Mamont248 [21]3 years ago

5 0

Answer:

Step-by-step explanation:

$\sqrt{81} = 9$

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Terri brought 1.74 meters of rope. Gracie brought 1.64 meters of rope. Who brought more rope

vredina [299]

Answer: Terri brought 10 more centimeters of rope than Gracie.

Step-by-step explanation:

8 0

3 years ago

This is a two-step equation. Steps: first add or subtract, then divide or multiply. 1. 5x - 7 = 48 2. 7n - 2 = 54 3. -4y + 7 = -

Bumek [7]

1. 5x - 7 = 48

5x = 48 + 7 = 55

x = 55/5 = 11

2. 7n - 2 = 54

7n = 54 + 2 = 56

n = 56 / 7 = 8

3. -4y + 7 = -21

-4y = -21 - 7 = -28

y = -28 / -4 = 7

4. x/2 + 5 = 12

x/2 = 12 - 5 = 7

x = 7 * 2 = 14

5. x/3 - 7 = 13

x/3 = 13 + 7 = 20

x = 20 * 3 = 60

6. -7 - 2 = 33 <- did you type this wrong?

-7x - 2 = 33

-7x = 33 + 2

-7x = 35

x = 5

7. -3x - 8 = -41

-3x = -41 + 8 = -33

x = -33 / -3 = 11

8. 3n - 7 = 35

3n = 35 + 7 = 42

n = 42 / 3 = 14

9. 7y + 9 = -47

7y = -47 - 9 = -56

y = -56 / 7 = -8

10. -8x + 4 = 68

-8x = 68 - 4 = 64

x = 64 / -8 = -8

11. 4n - 7 = -43

4n = -43 + 7 = -36

n = -36 / 4 = -9

12. 5x - 7 = 108

5x = 108 + 7 = 115

x = 115 / 5 = 23

13. 8 - 5w = -37

-5w = -37 - 8 = -45

w = -45 / -5 = 9

14. 42 = 18 + 4n

4n = 42 - 18 = 24

n = 24 / 4 = 6

15. 70 - 6x = 40

-6x = 40 - 70 = -30

x = -30 / -6 = 5

5 0

4 years ago

The freezer is 18c after cooling the temp. Was -12c, what's the difference?

zmey [24]

I am pretty sure 30 is the answer

6 0

3 years ago

Read 2 more answers

If a substance has a mass of 27.82 grams and a volume of 3.6 ml, what is the most accurate density of the substance in g/ml?

vladimir1956 [14]

7.7278 g/ml is the most accurate density of the substance.

<h3>What is density?</h3>

It is define as the quantity per unit volume, unit area, or unit length.

i.e. the mass of a substance per unit volume.

Mathematically,

$\rho =\frac{m}{v}$ ----- equation (1)

Where,

p is the density

m is the mass

v is the volume

According to the question,

Mass = 27.82 grams

Volume = 3.6 ml

By substituting the Value of m and v in equation 1.

$\rho =\frac{27.82}{3.6}$

$\rho = 7.7277777 g/ml$

Therefore,

The most accurate density of the substance in g/ml is 7.7277777 g/ml.

Learn more about density here:brainly.com/question/952755

#SPJ1

3 0

2 years ago

Ten points - Check attached image

Rudiy27

Answer:

Option D will be the correct option.

Step-by-step explanation:

Formula to get the area of the sector,

Area of the sector = $\frac{\theta}{360}(\pi r^{2})$

Here θ = Angle subtended by the arc of the sector at the center

r = radius of the circle

Area of the shaded sector = $\frac{155}{360}\times \pi (4.3)^2$

= 25.01 square inches

Area of the shaded sector will be 25 square inches (approximately).

Option D will be the correct option.

8 0

4 years ago