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3 years ago

A student draws two parabolas on graph paper. Both parabolas cross the x-axis at (-4.0) and (6, 0). The y-intercept of the first

Mathematics

2 answers:

solmaris [256]3 years ago

6 0

Answer:-0.5

........................

LuckyWell [14K]3 years ago

3 0

The answer is 0.5

The other is incorrect, so don't put that answer in. Hope this helps!

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Help me please. tysm :D

almond37 [142]

Answer:

84.8125 ft^2

Step-by-step explanation:

The area of the rectangle is

A = l*w

A = 5*15 = 75

The area of the semicircle

A = 1/2 pi r^2

We need the radius = 5/2 = 2.5

1/2 (3.14)(2.5) ^2

9.8125

Add the areas together

75+9.8125

84.8125

7 0

3 years ago

In ΔKLM, m = 160 cm, ∠M=145° and ∠K=28°. Find the length of l, to the nearest 10th of a centimeter.

Montano1993 [528]

Answer:

34.0 m

Step-by-step explanation:

The total angle sum in a triangle should be 180° hence the missing angle will be given by

180°-145°-28°=7°

Using sine rule

$\frac {m}{sin M}=\frac {l}{sin L}=\frac {k}{sin K}$

By substituting 160 for m, 145° for M and 7° for L then

$\frac {160}{sin 145^{\circ}}=\frac {l}{sin 7^{\circ}}$

Making l the subject then

$l=\frac {160 sin 7^{\circ}}{sin 145^{\circ}}=33.9956345990643m\\l\approx 34.0m$

3 0

3 years ago

La fracción 7/1<br>es igual a un número entero, ¿cuál es?

In-s [12.5K]

Answer: 7

Step-by-step explanation:

$\frac{7}{1}=7$

Divide :)

4 0

3 years ago

Write the equation in slope-intercept form.<br> 5x + 3y = 11

pshichka [43]

Answer:

y = -5/3 x + 11/3

Step-by-step explanation:

5x +3y = 11

3y = 11 - 5x

y = -5/3 x + 11/3

8 0

3 years ago

To solve this system of equations by elimination, what operation could be used to eliminate the x-variable and find the value of

babymother [125]

Answer:

The value of y is $y=\frac{42}{17}$

Step-by-step explanation:

we have

$4x+3y=6$ -----> equation A

$18x+5y=6$ -----> equation B

To eliminate the x-variable and find the value of y Multiply the equation A by -18/4 both sides or multiply the equation B by -4/18 both sides

I choice

Multiply the equation A by -18/4 both sides

$(-18/4)[4x+3y]=6*(-18/4)$

$-18x-13.5y=-27$ ------> equation C

Adds equation B and equation C

$18x+5y=6\\-18x-13.5y=-27\\-------\\5y-13.5y=6-27\\-8.5y=-21\\\\ y=\frac{42}{17}$

7 0

3 years ago