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3 years ago

Need help with these 5 questions any help with any of these is a big help!

Mathematics

1 answer:

Talja [164]3 years ago

3 0

Answer:

Has this question in gr 8 struggled with it couldnt figure it out and people on brainy dont help either

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Suppose Cone A is similar to Cone B and the scale factor between the solids is 3:2, respectively. If the height of Cone A is 15

blondinia [14]

Answer:

$10\ inches$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional

Let

x----> the height of cone B

using proportion

$\frac{3}{2}=\frac{15}{x} \\ \\x=2*15/3\\ \\x=10\ in$

4 0

4 years ago

What is the equation of the line that has a slope of m = 2 and passes through the point (-5, -6)?

Alenkinab [10]

Answer:

$y=2x+4$

Step-by-step explanation:

You can solve this two ways: insert the values into point-slope form and simplify to solve for y, converting it to slope-intercept form, or insert the values into slope-intercept form, solve for b, and insert b. We'll do both :)

Point-slope form:

$y-y_{1}=m(x-x_{1})$

Where:

$m$ is the slope

$x_{1}$ and $y_{1}$ are corresponding coordinate points $(x,y)$

Insert the given values:

$m=2\\\\(-5_{x_{1}},-6_{y_{1}})\\\\y-(-6)=2(x-(-5))\\\\y+6=2(x+5)$

Solve for y. Expand the right sie using the distributive property:

$y+6=2(x)+2(5)\\\\y+6=2x+10$

Isolate the variable. Subtract 6 from both sides, canceling out the 6 on the left:

$y+6-6=2x+10-6\\\\y=2x+4$

OR

Slope-intercept form:

$y=mx+b$

Where:

$m$ is the slope
$b$ is the y-intercept
$x$ and $y$ are corresponding coordinate points $(x,y)$

Insert the given values:

$m=2\\\\(-5_{x},-6_{y})\\\\-6=2(-5)+b$

Simplify the multiplication:

$-6=-10+b$

Solve for b. Add 10 to both sides, canceling out the 10 on the right:

$-6+10=-10+10+b\\\\4=b$

The value of b is 4. Insert the appropriate information into the equation. When using slope-intercept form, you don't plug in the coordinate points:

$y=2x+4$

:Done

4 0

3 years ago

SOMEBODY HELP ME IM DESPERATE

garik1379 [7]

I believe it is the commutative property of multiplication. Commutative property is you can put the numbers in any order and it will have the same end result. I got multiplication because it is multiplication.

Hope this helps!

4 0

3 years ago

Read 2 more answers

0. What is the result of the transformation below? (x, y)=(-x,y)

forsale [732]

Answer:

a reflection over the x-axis

Step-by-step explanation:

say you plotted (1,1) and the plotted (-1,1). The result would be a reflection over the x-axis.

4 0

3 years ago