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aleksandr82 [10.1K]
3 years ago
12

Please help me im having trouble but my teacher wont give out awnsers

Mathematics
2 answers:
Ganezh [65]3 years ago
8 0

Answer:

A. 0.75h

Step-by-step explanation:

let the heart rate be h,

then if heart rate increases by 75%,

75% * h

75/100 * h

0.75h

Option A is the correct answer.

Anastasy [175]3 years ago
7 0

Answer: A

Step-by-step explanation: I just makes since to me. Suck that the teacher wont give you the answer.

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LUCKY_DIMON [66]

Answer:

g=b-3.50

Step-by-step explanation:

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3 years ago
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Jeremy baked 9 cakes for the bake sale. he sifted 2 cups of powdered sugar on top of the cakes. how much powdered sugar is on ea
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3 years ago
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Does dose anyone know how to solve this?
solniwko [45]

Answer:

Width of rectangle = 6 m

Length of rectangle = 11 m

Step-by-step explanation:

Let width of rectangle = w

Length of rectangle = 3w-7

Area of rectangle = 66 m²

We need to find length and width of rectangle

The formula used is: Area=Length \times Width

Putting values and finding w

Area=Length \times Width\\66=(3w-7)(w)\\66=3w^2-7w\\3w^2-7w-66=0\\

Solve using quadratic formula: w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

We have a=3, b=-7, c=-66

Putting values and finding w

w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\w=\frac{-(-7)\pm\sqrt{(7)^2-4(3)(-66)}}{2(3)}\\w=\frac{7\pm\sqrt{49+792}}{6}\\w=\frac{7\pm\sqrt{841}}{6}\\w=\frac{7\pm29}{6}\\w=\frac{7+29}{6}\:,\:w=\frac{7-29}{6}\\w=6, w=-3.6

We get values of w as w=6 and w=-3.6

As we know width cannot be negative, so considering w = 6

So, Width = 6

Length = 3w-7 = 3(6)-7 = 18-7 = 11

So, Width of rectangle = 6 m

Length of rectangle = 11 m

6 0
3 years ago
I need help on number 1
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A cube has 6 faces. The surface area of a cube is 6 times the area of one face.

SA = 6s^2

SA = 6 * 6cm^2

SA = 6 * 36cm^2

SA = 216cm^2

6 0
3 years ago
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Answer:

To find the volume of the fish tank, we will need to multiply the height, the length, and the width of the fish tank. So, 21 x 27 x 16 = 9072 cm

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3 years ago
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