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2 years ago

Help with these questions to

Mathematics

1 answer:

katovenus [111]2 years ago

3 0

Answer:

Step-by-step explanation:

the formula for calculating the perimeter of a circle (the circumference C) is:

2π * r

And the area is:

π * r²

r is the radius.

Radius is the half of the diameter. The diameter here is equal to two square. One square is 5 of side.

The diameter is 10 and the radius is 5

It is the same for the other circle

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A goat and a cow together weigh 190 kg 640 g. The weight of the goat is 59 kg 720 g. Find the weight of the cow

AVprozaik [17]

Answer: 130 kg 920 g

Step-by-step explanation:

Given

The weight of the goat is 59 kg 720 g

The combined weight of goat and cow is 190 kg 640 g

Suppose, the weight of the cow is x kg

We know, 1 kg=1000 g

Converting weight into kg

Goat weight

$=59+0.720\\=59.720\ kg$

Total weight

$=190+0.640\\=190.640\ kg$

Then, the cow weight is given by

$\Rightarrow 190.640-59.720\\\Rightarrow 130.920\ kg\ \text{or}\ 130\ kg\ 920\ g$

7 0

2 years ago

Simplify (27-17)^2-80

artcher [175]

Answer:

-60

Step-by-step explanation:

7 0

2 years ago

Jennie purchased a box of crackers from the deli. The box is in the shape of a triangular prism. If the volume of the box is 3,2

Mnenie [13.5K]

Answer:

Height of the triangular face of the box is 12 cm.

Step-by-step explanation:

This question is not complete; please find the question as the attachment.

Volume of a triangular prism = Area of the triangular base × height

It's given in the question, Volume of the prism = 3240 cm³

Height of the prism = 30 cm

By substituting these values in the formula,

3240 = B × 30

B = $\frac{3240}{30}$

B = 108 cm²

Area of the triangular face (B) = $\frac{1}{2}(\text{Base})\times (\text{Height of the triangular base})$

108 = $\frac{1}{2}\times (18)\times h$

108 = 9h

h = 12 cm

Therefore, height of the triangular face of the prism is 12 cm.

7 0

3 years ago

-6/7 * 3/8 = what math problem which I need for khan academy

serious [3.7K]

Answer:

-3/4

Step-by-step explanation:

-6/7*3/8

-6*3/7*8

-18/24

-6/8

-3/4

5 0

3 years ago

Write a quadratic function in standard form whose graph passes through (4,0) and (6,0)

Diano4ka-milaya [45]

Answer:

f(x) = x² - 10x + 24

Step-by-step explanation:

The quadratic function has a graph that passes through the points (4,0) and (6,0).

Therefore, the graph has two x-intercepts at x = 4 and x = 6 and those are the roots of the equation.

So, (x - 4) and (x - 6) are two factors of the quadratic equation.

Then we can write the equation as

f(x) = (x - 4)(x - 6)

⇒ f(x) = x² - 4x - 6x + 24

⇒ f(x) = x² - 10x + 24

Hence, this is the required quadratic function in standard form. (Answer)

8 0

3 years ago