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2 years ago

If a 3 ft tall cardboard box casts a 6 ft long

Mathematics

2 answers:

il63 [147K]2 years ago

8 0

21 ft i think. mark as brainliest

igor_vitrenko [27]2 years ago

6 0

Answer:

9 ft tall.

Step-by-step explanation:

The box that is 3 feet tall casts a 6 foot shadow, which is double the height. If we use inverse operations because we start with the shadow we will get 9 feet because 18 divided by 2 is nine.

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Use The Scale Factor 1:12 To Find The Missing DimensionItem Great White SharkModel - Length In Inches?Actual Length 21 Feet

kykrilka [37]

To answer this question, we have that the scale factor is 1 / 12, and it says that the model is 1/12 the size of the actual length.

Then, we have that the actual length is 21 feet. The size of the model is:

$\frac{1}{12}\cdot21ft=1.75ft$

We need to remember that units are not mentioned in a scale factor.

Now, we need to transform the size of feet into inches. We know that in one foot we have 12 inches, then, we can take this into account to have the missing dimension item (length in inches):

$1.75ft\cdot\frac{12in}{1ft}=21in$

Therefore, the missing dimension is 21 inches (the model is 21 inches in length.)

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2 years ago

Find the number of real number solutions for the equation.x2 − 2x + 9 = 0

Talja [164]

Hi there!

We can use the discriminant of the quadratic formula to find the number of real solutions to this (or any other quadratic) equation.

The discriminant can be found by plugging in the data from the equation into the following formula:
$d = {b}^{2} - 4ac \\ with \: y \: = a {x}^{2} + bx + c$

When we fill in the data from the question we get
$d = ( - 2) {}^{2} - 4 \times 1 \times 9 = 4 - 36 = - 32$

Since d < 0 the equation has zero real solutions.

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3 years ago

How do you know where to shade above or below or left or right the boundary line in a linear inequality?

Oksi-84 [34.3K]

This depends on the inequality sign is compared to the y variable

For example, if the inequality is y < x, you would shade under the line x

If the inequality is y > x, you would shade above the line x.

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3 years ago

Alan mixes 1 1/3 cups of milk with a can of condensed soup. He makes a total of 2 5/8 cups of soup. How many cups of condensed s

Alborosie

Subtract 2_5/8 minus 1_1/3:
First, get the fractions to have a common denominator by multiplying the denominators together: 8*3 = 24
Rewrite both fractions with this new denominator:
5/8 needs to be multiplied by 3 on top and bottom to make it have a denominator of 24:
5/8 * 3/3 = 15/24
1/3 needs to be multiplied by 8 on top and bottom to make it have a denominator of 24:
1/3 * 8/8 = 8/24
Now that the fractions have been rewritten with the same denominator, subtract the mixed numbers:
2_15/24 - 1_8/24
Whole numbers:
2 - 1 = 1
Fractions:
15/24 - 8/24 = 7/24.
The can of condensed soup contains 1_7/24 cup

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4 years ago

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guapka [62]

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