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Grace [21]
3 years ago
8

How do you do 4x^2+3x-10=0

Mathematics
1 answer:
Likurg_2 [28]3 years ago
8 0
4x^2+3x-10=0\\
4x^2+8x-5x-10=0\\
4x(x+2)-5(x+2)=0\\
(4x-5)(x+2)=0\\
x=\dfrac{5}{4} \vee x=-2

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96 ÷ 42 + (25 x 2) - 15 - 3=? I need help with my math
ANTONII [103]
Pemdas
so do parenthaseese first
work inside then out
(25 times 2)
(50)
now we have
96/42+(50)-15-3=?

start from the begining again of the equation (left) now we do division
96/42=16/7

now we have 16/7+(50)-15-3
start over and do addition
16/7+50=2 and 2/7+50=2+2/7+50=52 and 2/7
subtract
52 and 2/7-15=52+2/7-15=37 +2/7=37 and 2/7
then subtract 3
37 and 2/7-3=37+2/7-3=34+2/7=34 and 2/7

answer is 34 and 2/7
7 0
3 years ago
A school track is shown the straightaway on each side measures 1,000 meters the curves are semicircles with diameter 74 meters w
lisov135 [29]

Answer:

2232.48 meters

Step-by-step explanation:

From the diagram:

Radius of semicircle = 74

Length of straightway on each side = 1000

The length of school track :

Straightway on each side = 2 * 1000 m = 2000m

Length of semicircle = πr/2

Length of both semicircle  = 2 * 3.142 * 74 /2 = 232.47785

Total Length = ( 2000 + 232.47785) = 2232.48 meters

7 0
3 years ago
One angle of a right triangle measures 80 degrees what is the measure of the other acute angle
puteri [66]

90 + 80 + x = 180
x = 10
6 0
3 years ago
Read 2 more answers
Question 3
Elza [17]

Answer:

Perimeter is 126cm and area is 972cm^2

Step-by-step explanation:

Scale factor means you multiply the dimensions by the factor. In this case 4.5

The width 6cm becomes 27cm. The length 8cm becomes 36cm.

Perimeter = 2*L + 2*W, L is length and W is width.

P=27*2cm+36*2cm\\P=54cm+72cm\\P=126cm

Area = L*W

A=27cm*36cm\\A=972cm^2

8 0
3 years ago
Geometry Help needed 25 points
Arada [10]

W is in the lower left corner located at (-1,-2)

W' is in the upper left corner located at (-2,1)

Notice that the original Y value (-2) became the new X value (-2) and the original X value (-1) is the inverse of the new Y value (1).

If you look at the coordinates of the other two pints you would see it was the same transformation.

When the X and Y coordinates switch like this, it is a 90 degree clockwise rotation around the origin.

4 0
3 years ago
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