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3 years ago

A teacher asked the class to write an expression that Which of these expressions have an estimated

Mathematics

2 answers:

valkas [14]3 years ago

6 0

Answer:

9.7 x 2.84 and 6.25 x 4.76

Step-by-step explanation:

they are the only two that get close to 30 without getting over it

max2010maxim [7]3 years ago

3 0

Answer:

9.7 x 2.84 and 6.25 x 4.76

Step-by-step explanation:

they are the only two that get close to 30 without getting over it

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alexandr1967 [171]

You would do 9(7) = 63

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3 years ago

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Sedaia [141]

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Step-by-step explanation:

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2 years ago

Here is a system of linear equations: y = 3x + 4 y = 3x - 7 How many solutions, if any, does this system have?

marysya [2.9K]

Answer:

Step-by-step explanation:

y = 3*x + 4

y = 3*x - 7

Each one of the above equations is the equation for a straight line.

The solution for such a system is the point P ( x₀ , y₀ ) which coordinates belong to both straight lines. According to this, there is only one solution for that system ( only one point of intersection). The intersection of a pair of straight lines either can occur or not depending on the slope of the lines, if they have the same slope they are parallel, then they did not touch each other ever. How can m, be identified in the straight line equation??, just by looking at the coefficient of x.

The two equations have slope 3 they are parallel then there is not a solution ( there is not a common point to both equations)

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2 years ago

What is the equation in point-slope form of a line that passes through the points (3, −5) and (−8, 4) ?

maxonik [38]

ANSWER

$y + 5= - \frac{9}{11} (x-3)$

or

$y - 4= - \frac{9}{11} (x + 8)$

EXPLANATION

We want to find the equation in point-slope form of a line that passes through the points (3, −5) and (−8, 4).

The point-slope form is given by;

$y-y_1=m(x-x_1)$

where

$m = \frac{4 - - 5}{ - 8 - 3} = \frac{4 + 5}{ - 11} = - \frac{9}{11}$

is the slope of the line.

If

$(x_1,y_1)=(3,-5)$

The point-slope form is

$y + 5= - \frac{9}{11} (x-3)$

On the other hand, if
$(x_1,y_1)=( - 8,4)$

Then the point-slope form is,

$y - 4= - \frac{9}{11} (x + 8)$

These two equations are the same when simplified.

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3 years ago

I need help answering this problem pls

EleoNora [17]

Answer: b = 20 c = 160

Step-by-step explanation:

the value of a straight angle is 180, so 180-20= 160

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2 years ago

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