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3 years ago

Does anyone know how to foil the answer ?!

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

7 0

Answer:

(a+b)(c+d)=a c+a d+b c+b d is the formula

Step-by-step explanation:

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Jack drove to work in the morning at an average speed of 45 miles per hour. He returned home in the evening along the same route

Dmitry [639]

Answer:

Step-by-step explanation:

Let's say that the time it took him to get to work in the morning is t hours. Then the time it took him to get home in the afternoon must be 1 - t hours. We know that for any trip, distance equals rate times time or d = rt . That means that the distance he drove to work is given by , but we also know that the distance he drove to get home must be the same distance, because he took the same route (and, presumably, no one picked up him house and moved it while he was at work) so for the trip home we can say d = 30 × (1 - t) and since the distances are equal, we can say:

45t = 30 × (1 - t)

45t = 30 - 30t

45t + 30t = 30

75t = 30

t = 30/75

t = 2 /5 hour to drive to work at 45mph

Since , d = rt

d = 45 ×(2/5) = 18miles

8 0

3 years ago

Options A)117 B)39 C)3 D)63

hichkok12 [17]

Answer:

B. 39

Step-by-step explanation:

3x=117divided by 3=39

4 0

3 years ago

Which model represents the factors of 4x²-9?

NeX [460]

Step-by-step explanation:

(

)

−

(

−

)

(

)

6 0

3 years ago

30+5z+5z=180 what is the value of z

Mariulka [41]

Answer:

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

8 0

2 years ago

Read 2 more answers

If AD and BD are bisectors of CAB and CBA respectively. Find the sum of angles x and y.

olchik [2.2K]

The picture in the attached figure

step 1
we know that
It is given that AD and BD are bisectors of ∠CAB and ∠CBA respectively.
Therefore,
x = ∠CAB/2 -----> equation 1
y = ∠CBA/2 -----> equation 2

step 2
In triangle ABC,
∠CAB + ∠CBA + ∠ACB = 180° ----> [The sum of all three angles of a triangle is 180°]
∠CAB + ∠CBA + 110° = 180°
∠CAB + ∠CBA = 180° - 110°
∠CAB + ∠CBA = 70° ------> divide by 2 both sides
∠CAB/2 + ∠CBA/2 = 70/2 -------> equation 3
substitute equation 1 and equation 2 in equation 3
x+y=35

hence

the answer is
x+y =35°
⇒ x + y = 35° ...[From equation (1) and (2)]

5 0

4 years ago