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3 years ago

PLEASE HELP!! WILL MARK BRAINLIEST!!!!! please answer all to get brainliest!

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

5 0

Answer:

1. -1

2. n>-4

3. -5>y

4. -30>x ( i didn't know how to put the line under > but it should have a line under it)

Step-by-step explanation:

Basile [38]3 years ago

5 0

Answer:

-30

Step-by-step explanation:

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Find the midpoint of AB A.(-2,-3) B.(16,4) C.(-2,-11) D.(4,-10)

zheka24 [161]

Answer:

(-2,-1)

Step-by-step explanation:

Using the graph find the coordinates for A and B.

A (-4,2) and B is (0,-4)

Midpoint formula is (x1 + x2)/2 , (y1+y2)/2

x value of the midpoint= (-4+0)/2 = -2

y value of the midpoint= (2 + -4)/2 = -2/2= -1

Midpoint is (-2, -1)

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3 years ago

Which is an equation of the line with slope –3 and passes through (2, –1)

Savatey [412]

using the formula:

y = mx +b

Using the given slope and coordinate points we get:

-1 = -3(2) + b

-1 = -6 + b

add 6 to each side

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which is the same as:

3x + y = 5 ...answer choice a

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2 years ago

Which equation has the solutions x=1+/- 5?

nikitadnepr [17]

Answer:

$x^{2} -2x-4=0$

Solving Steps

Use the quadratic formula

$x=\frac{-(-2)(+/-)\sqrt{(-2)^2-4*1*(-4)} }{2*1}$

Multiply / Remove the parentheses / Evaluate

$x=\frac{2(+/-)\sqrt{4+16} }{2}$

Calculate

$x=\frac{2(+/-)\sqrt{20} }{2}$

Separate the solutions

$x=\frac{2(+/-)2\sqrt{5} }{2} \\x=\frac{2-2\sqrt{5} }2}$

Simplify

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2 years ago

Round 147.667 & 142.5 to the nearest cent.

Travka [436]

Answer:

147.67 and 142.50

Step-by-step explanation:

Cents are only two digits after the decimal, aka hundredths. So, you have to round each number to the hundredth.

6 0

2 years ago

Read 2 more answers

Answer a, b and c. See image below

dlinn [17]

Answer:

a) 3/5 < 4/5

b) In general if two fractions have the same denominator, then whichever fraction has the numerator closer to its denominator will be the largest fraction.

c) $\frac{7}{10} > \frac{9}{15}$ or $\frac{7}{10}$

Step-by-step explanation:

a) 3/5 < 4/5

Flip the sign and the placement of the fraction so 3/5 is less then 4/5.

b) In general if two fractions have the same denominator, then whichever fraction has the numerator closer to its denominator will be the largest fraction.

c) We need to change the denominators to a common denominator to compare the size of the two fractions:

$\frac{7}{10}$ × $\frac{3}{3}$ = $\frac{21}{30}$