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Pachacha [2.7K]
3 years ago
13

What is the slope of the line that passes through the points (-10, -8) and

Mathematics
2 answers:
Phantasy [73]3 years ago
7 0

Answer:

Slope equals -4

Step-by-step explanation:

Lemur [1.5K]3 years ago
6 0

Answer:

-4

Step-by-step explanation:

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Help help help please using the elimination solve this​
serious [3.7K]

Answer:

a = 15

b = -14

Step-by-step explanation:

Here, we want to solve by elimination

let us start by rewriting the first equation

We can do this by multiplying through by 10

We have this as;

2a -5b = 100

Now let us eliminate

Multiply equation ii by 2 and equation i by 1

2a -5b = 100

2a-2b = 58

Subtract equation ii from i

-3b = 42

b = 42/-3 = -14

Secondly;

Multiply equation ii by 5 and i by 1

2a - 5b = 100

5a -5b = 145

Subtract ii from i

-3a = -45

a = 45/3

a = 15

3 0
3 years ago
If the simple interest on $4,000 for 7 years is $1,400, then what is the interest rate?
alisha [4.7K]

$1400 = $4000 × 7 × r / 100

$1400 = 28000 × r / 100

$ 1400 = $ 280 × r

rate = $1400 ÷ $ 280

rate = 5

7 0
3 years ago
Find the equation of the quadratic function with zeros 10 and 12 and vertex at (11, -2).
Tanya [424]

Answer:

y=2x^2-44x+240

Step-by-step explanation:

we are given a quadratic equation

Let's assume formula of vertex form of parabola as

y=a(x-h)^2+k

where vertex is (h,k)

we are given

vertex =(11,-2)

so, h=11, k=-2

now, we can plug it

y=a(x-11)^2-2

now, we are given zeros at x=10 and x=12

we know that zeros will be x=10 , y is 0

so, we can plug x=10 and y=0 and solve for 'a'

0=a(10-11)^2-2

0=a-2

a=2

now, we can plug it back

and we get

y=2(x-11)^2-2

so, we get quadratic equation as

y=2x^2-44x+240

6 0
4 years ago
Seven million as a numeral
schepotkina [342]
If you mean in Roman numerals,it would be ___.VII. or it could be ((DCC))
5 0
3 years ago
Which equation has the same graph as 4x + 8y = 12?
Nutka1998 [239]

Answer:

4x + 8y = 12  \\ 4(x + 2y) = 12 \\  \frac{4(x + 2y)}{4}  =  \frac{12}{4}  \\ x + 2y = 3

8 0
3 years ago
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