Need help with this please

Answer:

4,7025 (kJ).

Step-by-step explanation:

1) according to the condition: m=25 gr.; t₂=90; t₁=45; c=4.18 J/(g°C);

2) the formula of required heat is

Q=c*m*(t₂- t₁);

3) according to the formula of heat:

Q=4.18*25*45=4702.5 (J).

Answer:

can you please write it differently cuz its kinda confusing

Answer:

Algebra questions cuz im bad at it

Step-by-step explanation:

Answer:

fractions

Step-by-step explanation:

confusing

Answer:

55.26

Step-by-step explanation:

Divide 50 by 9.5 to get the amount the tool will be taxed.

5.26

Add 50 to that to get the total

55.26

The tax rate charge on the tool that is worth 9.5% is $4.75. The total amount paid for the tool is $54.75

The tax rate charge on a piece of equipment follows a standard rate by tax charges organization in that geographical region.

Given that:

= 9.5% × $50

= 0.095 × 50

= $4.75

The total amount paid for the tool is = $4.75 + $50 = $54.75

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Step-by-step explanation: ummnmm i think 18

The proportion of the value is  is 18/a = a/16 , A proportion is an equation that sets two ratios at the same value.

A proportion is an equation that sets two ratios at the same value. For instance, you could express the ratio as follows: 1: 3 if there is 1 boy and 3 girls (for every one boy there are 3 girls) There are 1 in 4 boys and 3 in 4 girls. 0.25 are male (by dividing 1 by 4)

If two ratios depict the same relationship, they are said to be proportionate. By writing two ratios as fractions and then reducing them, one can determine if they are proportionate. Your ratios are proportional if the reduced fractions are equal.

Given:

It is a similar triangle to the one in the example.

The hypotenuse measures 18 units in length.

The leg is a certain length.

The portion of the hypotenuse is 16 units long.

We must ascertain the ratio that was employed to calculate the value of a.

We will use the geometric mean leg rule to discover the ratio needed to calculate the value of a.

When using the "leg rule," we have;

hypotenuse/leg

leg/part

Substituting the values of hypotenuse, leg and part, we get;

18/a = a/16

Thus the proportion of the value is  is 18/a = a/16

The complete question is :

Which proportion can you use to find the value of a?

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Answer:

A= Wind and water eriosion; B=Water erosion

Why?:

The lesson

Answer:

C - A = erosion by wind and water; B = erosion by water

Step-by-step explanation:

hope this helps anyone that still needs it

Answer:

83

Step-by-step explanation:

29/35 is 0.828 rounded to 83

Answer:

82%

Step-by-step explanation:

yes sure why do you want help dear

Answer:

a=-1/8

Step-by-step explanation:

Answer: 700a+1700p= 21200

p=a+4

Step-by-step explanation:

Let a = the number of associated designated

Let p= the number of partners designated

Answer:

x = 42

Step-by-step explanation:

[tex]\frac{18}{15}[/tex] = [tex]\frac{x}{35}[/tex] ⇔ [tex]\frac{6}{5}[/tex] = [tex]\frac{x}{35}[/tex] ⇔ [tex]\frac{6*7}{5*7}[/tex] = [tex]\frac{x}{35}[/tex] ⇒ x = 42

Step-by-step explanation:

In right angled triangle

Tan = opposite side / adjacent side

Opposite side = 7 inches

Adjacent side = 5 inches

Tan = 7/5

Trigonometric function is the ratio of the different sides of the triangle. The correct value of Tanθ is 7/5.

The trigonometric function gives the ratio of different sides of a right-angle triangle.

[tex]\rm Sin \theta=\dfrac{Perpendicular}{Hypotenuse}\\\\\\Cos \theta=\dfrac{Base}{Hypotenuse}\\\\\\Tan \theta=\dfrac{Perpendicular}{Base}\\\\\\Cosec \theta=\dfrac{Hypotenuse}{Perpendicular}\\\\\\Sec \theta=\dfrac{Hypotenuse}{Base}\\\\\\Cot \theta=\dfrac{Base}{Perpendicular}\\\\\\[/tex]

where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite to the 90° angle.

We know that the value of the perpendicular height of the cone is 7 inches while the measurement of the base of the triangle is 5 inches, therefore, using Pythagoras theorem the third side of the triangle can be written as,

[tex]\rm(Slant\ Height)^2 = 7^2 + 5^2\\\\(Slant\ Height)^2 =49+25\\\\(Slant\ Height)= 8.6[/tex]

Now, the value of the trigonometric ratios can be written as,

[tex]\rm Sin \theta=\dfrac{7}{8.6}\\\\\\Cos \theta=\dfrac{5}{8.6}\\\\\\Tan \theta=\dfrac{7}{5}\\\\\\Cosec \theta=\dfrac{8.6}{7}\\\\\\Sec \theta=\dfrac{8.6}{5}\\\\\\Cot \theta=\dfrac{5}{7}\\\\\\[/tex]

Hence, the correct value of Tanθ is 7/5.

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WHICH?

MSOAOSBDJDSONASBDJDBDBDBDI

I NEEED TOOOO

Answer:

c. 5m

Step-by-step explanation:

25 × 5 × m

multiply them

=5m

Answer:

5 gardeners

Step-by-step explanation:

1 gardener - 6 trees in 30 min

or 1 tree in 5 min so in one minute gardener can plant 1/5 tree

in 45 min 1 gardener can plant 9 trees

so you would need 5 gardeners to do 45 trees in 45 min

We have that the number of men needed to plant 45 trees in 45 minutes is

From the question we are told that

3 gardeners can plant 18 trees in 30 minutes.

plant 45 trees in 45 minutes?

Generally the equation for the One gardeners time of planting   is mathematically given as

Since

3 gardeners can plant 18 trees in 30 minutes.

Therefore

[tex]X=\frac{18}{30}*\frac{1}{3}\\\\X=\frac{1}{5}trees/min[/tex]

Since

45 trees in 45 minutes

Therefore

1 tree for every min

Hence

Men need for 1 tree for every min is

[tex]1=x*\frac{1}{5}\\\\x=5[/tex]

Therefore

x=5men would plant 45 trees in 45 minutes

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Answer:

10

Step-by-step explanation:

Answer:

y = 1x + 46

Step-by-step explanation:

Answer:

below

Step-by-step explanation:

y=0,100

x= -250, 0

Hope this helped

Answer:

9) - 17

11) - 5

13) 30

15) 16

10) - 20

12) - 1

14) 30

16) - 21

1) 16

3) 21

5) - 22

7) - 19

2) 11

4) 7

6) - 9

8) - 6

Step-by-step explanation:

Sorrh I wrote this weirdly I was reading it downwards not sideways but hopefully this helps either way :))

Answer:

-42÷3/7=-98

Step-by-step explanation:

Answer:

235/3

Step-by-step explanation:

First, let's make a varible x. Let x be the "what number" part in the question.

Now, Let's convert the words into an equation.

We get:

60% * x = 47

Simplifing, we get:

0.6 * x = 47

0.6x = 47

x = 47 / 0.6

x = 47 / [tex]\frac{6}{10}[/tex]

x = 47 / [tex]\frac{3}{5}[/tex]

x = 47 * 5/3

x = 235/3

Answer:

7(a-b)+1           or           7a-7b+1

Step-by-step explanation:

Start by combining like terms and you will have 7a-7b+1

If you want to take it one step further you can pull the 7 from both like 7(a-b)+1

Answer:

It was 270 miles before the station

Step-by-step explanation:

So half of 540 is 270, and I would divide because 4 divied by 2 is 2 so thats why I first divided. Then you just say 270 miles before the station.

I hope this helps!

Have a great day :)

Answer:

Step-by-step explanation:

sin(0°) = 0

sin(90°) = 1

The values of sin0 and sin 90 are 0 and 1 respectively

Given the following values of theta

Theta = 0 and 90 degrees

If theta = 0 dgrees

Sin (0) = 0

If theta = 90 degrees

Sin(90) = 1

Hence the values of sin0 and sin 90 are 0 and 1 respectively

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Answer:

5x+15+2x=24+4x

Step-by-step explanation:

I hope this helps

Answer:

4x^-4

4(x^-2)²

4x^4

Step-by-step explanation:

sorry I am not clear about question.

Answer:

Miles per gallon, or mpg

Step-by-step explanation:

Answer:

125/216

25/72

5 / 72

1 / 216

Step-by-step explanation:

n = 3

p = 1/6 = 0.1667

Using the relation :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

F(0) = 3C0 * (1/6)^0 * (1 - 1/6)^3

F(0) = 1 * 1 * (5/6)^3

F(0) = 1 * 125/216

F(0) = 125 / 216

F(1) = 3C1 * (1/6)^1 * (1 - 1/6)^2

F(1) = 3 * 1/6 * (5/6)^2

F(1) = 3 * 1 / 6 * 25/36

F(1) = 75 / 216

F(1) = 25 / 72

F(2) = 3C2 * (1/6)^2 * (1 - 1/6)^1

F(2) = 3 * 1 / 36 * (5/6)^1

F(2) = 3 * 1/36 * 5/6

F(2) = 15/216

F(2) = 5/72

F(3) = 3C3 * (1/6)^3 * (1 - 1/6)^0

F(3) = 1 * 1 /216 * (5/6)^0

F(3) = 1 * 1/216

F(3) = 1/216

Answer:

You have to turn it into a mixed fraction.

Step-by-step explanation:

When you start out with the numerator being larger than the denominator.

Find the Highest Common Factor of the numerator. (I.E 10/8 - 1 2 4) and then divide by the HCF. the whole number part will be the same.