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3 years ago

6th grade math, help me please

Mathematics

2 answers:

rodikova [14]3 years ago

4 0

Answer:

C. Multiply 3 by 18

Step-by-step explanation:

Further explanation

$1 \: page \: = 3min \\ 18 \: pages \: = x \\ x = 18 \times 3 \\ x = 54$

svlad2 [7]3 years ago

4 0

Answer: C multiply 3 by 18

Step-by-step explanation:

Susan reading 1 page every three minutes is a unit rate. Thus, simply multiply any number of pages by 3 to get the times. For example, for Susan to read 281 pages, it would take 281*3 minutes.

Hope it helps <3

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2 years ago

This is distance & midpoint formulas I don’t know how to solve this can anyone help?

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Answer:

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2 years ago

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Inga [223]

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Step-by-step explanation:

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3 years ago

Show the reflection of the given points.Locate the points of the reflection in their proper position around the x-axis

amid [387]

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2 years ago

An architect wants to draw a rectangle with a diagonal of 13 centimeters. The length of the rectangle is to be 3 centimeters mor

butalik [34]

Answer:

The rectangle is 3.2 cm by 12.6 cm

Step-by-step explanation:

See attached image for a diagram.

Choose w to represent the width because the length is described by referring to the width: it's 3 more than (add 3) triple (multiplied by 3) the width.

Length = 3w + 3

The diagonal forms two right triangles, each with leg = w, other leg = 3w + 3, hypotenuse = 13.

The Pythagorean Theorem says $(\text{leg})^2+(\text{leg})^2=(\text{hypotenuse})^2$ so

$w^2+(3w+3)^2=13^2\\\\w^2+9w^2+18w+9=169\\\\10w^2+18w-160=0\\\\5w^2+9w-80=0\\$

Now solve using the Quadratic Formula with $a=5,\,b=9,\,c=-80$ .

$w=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\w=\frac{-9\pm\sqrt{81+1600}}{10}\\\\w=\frac{-9\pm\sqrt{1681}}{10}\\\\w=\frac{-9\pm41}{10}\\\\w=-5\text{ or }w=3.2$

The negative root makes no sense as a distance, so the width of the rectangle is 3.2 cm. The length is 3(3.2) + 3 = 12.6 cm.

5 0

2 years ago