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3 years ago

Identify the slope using the following two points: (-1, 6) and (-3, 10)

Mathematics

2 answers:

frozen [14]3 years ago

5 0

Answer: The slope is -2. Hope this helps :)

Step-by-step explanation:

y2 - y1/ x2 - x1

Snowcat [4.5K]3 years ago

5 0

Step-by-step explanation:

Remember (y2-y1)/(x2-x1)

$\frac{y {}^{2} - y ^{1} }{x {}^{2} - x {}^{1} }$

for y, 10-6 = 4

for z, -3 + 1= -2

4/-2 is -2

your slope is -2

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Noah is buying a pair of jeans and using a coupon for 10%off. The total price is $56.70 which includes $2.70 in sales tax. Noah’

lora16 [44]

Answer:

See below.

Step-by-step explanation:

So, we know that Noah's purchase can be modeled by the equation:

$x-0.1x+2.70=56.70$

Part 1)

The solution to the equation will be the value of x.

In this case, x will represent the original price of the jeans.

We know that Noah has a coupon for 10% off the original price of the jeans.

So, 0.1x will represent how much of the original price Noah gets a a discount on.

Therefore, (x - 0.1x) represents the total cost of the jeans after the coupon.

So, x is our original price of the jeans.

Part 2)

To verify that 70 is not a solution, we can simply substitute 70 for x and check whether or not the equation is true. So:

$(70)-0.1(70)+2.7\stackrel{?}{=}56.70$

Multiply:

$70-7+2.7\stackrel{?}{=}56.7$

Subtract:

$63+2.7\stackrel{?}{=}56.7$

Add:

$65.7\neq56.7$

However, we can verify that 60 is the solution by substituting. So, substitute 60 for every x:

$(60)-0.1(60)+2.7\stackrel{?}{=}5.7$

Multiply:

$60-6+2.7\stackrel{?}{=}56.7$

Subtract:

$54+2.7\stackrel{?}{=}56.7$

Add:

$56.7\stackrel{\checkmark}{=}56.7$

So, 60 is indeed the solution and is the value of x.

So, this means that $60 was the original price of the jeans.

8 0

3 years ago

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Could someone please answer this who actually knows how to do it please??!

posledela

Answer:

x+y= 59, x-y= -13

Step-by-step explanation:

We know that x is the smaller number and y is the bigger number. We also know that the difference is 13, meaning x-y= -13. Since the sum of the two numbers is 59, x+y= 59

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2 years ago

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73 and 4.4 x 10 to the 6th power

Lubov Fominskaja [6]

Answer:

4,400,073

Step-by-step explanation:

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3 years ago

The altitude of an airplane

kirill [66]

Answer:

it depends

Step-by-step explanation:

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3 years ago

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Calcite the area of sphere radius 3 give your answer in 1 decimal place

Lisa [10]

Answer: I assume you mean surface area of a sphere.

The formula is 4πr²

If radius=3, then:

4 times $\frac{22}{7}$ times 3²

4 times $\frac{22}{7}$ times 9

= 113.142857

Rounded to 1 decimal place = 113.1

NOTE: In place of π you can also use 3.14.

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3 years ago

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