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mylen [45]
3 years ago
7

The time, T (seconds) it takes for a pot of water to boil is inversely proportional to the cooker setting, H, applied to the pot

.
When H = 4, T = 700.
Work out T when H = 14
Mathematics
1 answer:
kherson [118]3 years ago
7 0

Answer:

200

Step-by-step explanation:

T = x * (1/H)

x = T*H

x = 2800

so for H = 14

T = 2800 * (1/14) = 200

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Daniel and William have some marbles. Daniel finds that 2/5 of the marbles he has is 4/5 the number marbles William has. William
fgiga [73]
If William has 195 marbles, let's find 4/5 of that.

195 * 4/5 = 156

156 is 2/5 of the marbles Daniel has.

Now we must multiply by the reciprocal

156 * 5/2 ( to find all of Daniel's marbles, not just 2/5) = 390 marbles

Daniel has 390 marbles.
4 0
3 years ago
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If we apply the Pythagorean Theorem to the Egyptian knots we can see that 3^2 + 4^2 = 5^23 2 +4 2 =5 2 . Which of the sets of th
pantera1 [17]

Answer:

B) { 51, 149, 140 }

C) { 16, 63, 65 }

Step-by-step explanation:

We need to choose Pythagoras theorem formula

c^2=a^2+b^2

now, we can verify each options

option-A:

a=1

b=1

c=1

now, we can verify formula

1^2=1^2+1^2

1=2

We can see that left side is not equal to right side

so, this is FALSE

option-B

a=51

b=140

c=149

now, we can verify formula

149^2=51^2+140^2

22201=22201

We can see that left side is  equal to right side

so, this is TRUE

option-C

a=16

b=63

c=65

now, we can verify formula

65^2=16^2+63^2

4225=4225

We can see that left side is  equal to right side

so, this is TRUE

option-D:

a=6

b=8

c=11

now, we can verify formula

11^2=6^2+8^2

121=100

We can see that left side is not  equal to right side

so, this is FALSE

3 0
3 years ago
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Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Check all that apply.
DIA [1.3K]
Reta a:

3x-4y=7 \\ -4y=-3x+7 \\ 4y=3x-7 \\ y= \frac{3}{4}x- \frac{7}{4}

reta x:

y=ax+b

Retas paralelas possuem coeficientes angulares iguais ⇒ mₐ=mₓ

y= \frac{3}{4}x+b

(-4,-2)

\frac{3}{4}.(-4)+b=-2 \\ -3+b=-2 \\ b=-2+3 \\ b=1

∴ y=3/4x+1
8 0
3 years ago
Find the value of y.
Ksivusya [100]

Answer:

y = 2

Step-by-step explanation:

20y - 21 = 10y - 1

20y = 10y + 20

10y = 20

y = 2

7 0
3 years ago
How do you do this haaaa
Ratling [72]

Answer:

7000

Step-by-step explanation:

7 0
3 years ago
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