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antiseptic1488 [7]
2 years ago
8

1. Choose the best answer that represents the property used to rewrite the expression.

Mathematics
1 answer:
Likurg_2 [28]2 years ago
6 0

in log minus means divide

log 6 - log 3 = log (6÷3)

log 6 - log 3 = log 2

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Higher Order Thinking Greg has a bag
velikii [3]

Answer:

shes less likely to pick blue from the second bag

Step-by-step explanation:

first you divide 10 by 25 which will give you 40 percent

then

you divide 75 by 250 which will give you 30 percent

which makes it less likely for Greg to pick blue from the second bag

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A pair of boots is on sale for 1/4 off the original price. The sale price is $70.50. What is the original price of the boots?
Iteru [2.4K]

Answer: 282

Step-by-step explanation: just multiplícate it by 4

4 0
3 years ago
Which word is used to name the bold number?
prohojiy [21]
If 3 is the bold number then the answer is D. <span>#TeamAlvaxic</span>
7 0
3 years ago
In triangle , side and the perpendicular bisector of meet in point , and bisects . If and , what is the area of triangle
stich3 [128]

In triangle ABC, side AC and the perpendicular bisector of BC meet in point D, and BD bisects ∠ABC。 If AD = 9 and DC = 7, 145–√5  is the area of a triangle.

I supposed here that [ABD] is the perimeter of ▲ ABD.

As  BD  is a bisector of  ∠ABC ,

ABBC=ADDC=97

Let  ∠B=2α

Then in isosceles  △DBC

∠C=α

BC=2∗DC∗cosα=14cosα

Thus  AB=18cosα

The Sum of angles in  △ABC  is  π  so

∠A=π−3α

Let's look at  AC=AD+DC=16 :

AC=BCcosC+ABcosA

16=14cos2α+18cosαcos(π−3α)

[1]8=7cos2α−9cosαcos(3α)

cos(3α)=cos(α+2α)=cosαcos(2α)−sinαsin(2α)=cosα(2cos2α−1)−2cosαsin2α=cosα(4cos2α−3)

With  [1]

8=cos2α(7−9(4cos2α−3))

18cos4−17cos2α+4=0

cos2α={12,49}

First root lead to  α=π4  and  ∠BDC=π−∠DBC−∠C=π−2α=π2 . In such case  ∠A=π−∠ABD−∠ADB=π4, and  △ABD  is isosceles with  AD=BD. As  △DBC  is also isosceles with  BD=DC=7,  AD=7≠9.

Thus first root  cos2α=12  cannot be chosen and we have to stick with the second root  cos2α=49. This gives  cosα=23  and  sinα=5√3.

The area of a triangle ABD=12h∗AD  where h  is the distance from  B  to  AC.

h=BCsinC=14cosαsinα

Area of  triangle ABD=145–√5

= 145–√5.

Incomplete question please read below for the proper question.

In triangle ABC, side AC and the perpendicular bisector of BC meet in point D, and BD bisects ∠ABC。 If AD = 9 and DC = 7, what is the area of triangle ABD?

Learn more about the Area of the triangle at

brainly.com/question/23945265

#SPJ4

6 0
2 years ago
Please help. will give points
Snezhnost [94]
(x² + 10)(6x - 5)
6x³ - 5x² + 60x - 50 or the second option
6 0
3 years ago
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