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Kay [80]
3 years ago
6

Factorise: a squared +8a -20

Mathematics
1 answer:
Vaselesa [24]3 years ago
8 0
Factor out the 4 in both equations
8a^2-20^2=(2^2 times a^2 times 2)-(2^2 times 5)
therefor it is also equal to
(2a)^2 times 2-(2^2 times 5)
we can force it into a difference of 2 perfect squares which is a^2-b^2=(a-b)(a+b)
(2a√2)^2-(2√5)^2=((2a√2)-(2√5))((2a√2)+(2√5))


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I really need help and i need to solve this one that says solve & simplify:3/4×2/3
VARVARA [1.3K]

3/4 2/3

This is a multiplication of fractions

1.- Multiply the numerators and the denominators

3/4 x 2/3 = (3x 2) / (4 x 3)

= 6/12

2.- Simplify

= 3/6

= 1/2

4 0
1 year ago
Without building the graph, find the coordinates of the points of intersection of the graph of the equation (x+2)(y+3)=0 with th
Vladimir79 [104]
We have that
<span>(x+2)(y+3)=0

we know that

Part A)
the x-intercept is when y=0
for y=0
</span>(x+2)(0+3)=0--------> (x+2)*3=0------> 3x+6=0----> 3x=-6----> x=-2
the point is (-2,0)

Part B)
the y-intercep is when x=0
for x=0
(0+2)(y+3)=0-----> 2*(y+3)=0-----> 2y+6=0----> y=-6/2-----> y=-3
the point is (0,-3)
8 0
3 years ago
layla drew a quadrilateral with 4 right angles and 2 pairs of opposite sides that are parallel. name the quadrilateral she could
mixas84 [53]
Since you want 4 right angles, and 2 pairs of opposite sides, you're probably looking for a rectangle.
8 0
3 years ago
Read 2 more answers
Bro please help me ToT this is honestly so harddd
MissTica

Answer:

On a fair die, half the numbers are even and half the numbers are odd. So, the probability for a single roll of getting an even number or an odd number is 12. So, the odds are 7:1 against the desired outcome

5 0
3 years ago
Sally likes 225 but not 224; she likes 900 but not 800; she likes 144 but not 145. which does she like - 1600 or 1700?
Pavel [41]

All of Sally's "likes" are squares: 225 = 15², 900 = 30², 144 = 12²

1600 = 40²

Sally "likes" 1600

3 0
3 years ago
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