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3 years ago

!!!!!!! I NEED THE WORK PLS ILL GIVE BRAINLIST!!!

Mathematics

1 answer:

dexar [7]3 years ago

3 0

Answer:

1. 4 and 4sqrt2

2. 6sqrt2 and 6sqrt2

3. 5 and 5sqrt2

4. 5sqrt2 and 5sqrt2

5. 6 and 6

6. 8 and 8sqrt2

7. sqrt3 and sqrt6

8. sqrt2 and sqrt4

Step-by-step explanation:

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1. ADEA has vertices D(8,4), E(2, 6), and F(3, 1). What are the vertices of the image after a dilation with a scale factor of 5

lubasha [3.4K]

Answer:

The vertices of the image are D' (40, 20), E' (10, 30), F' (15, 5)

Step-by-step explanation:

If the point (x, y) dilated by a scale factor k using the origin as a center of dilation, then its image is (kx, ky)

Let us use this rule to solve our question

∵ The vertices of ΔDEF are D (8, 4), E (2, 6), and F (3, 1)

∵ ΔDEF dilated by a scale factor 5

∴ k = 5

∵ The origin as the center of dilation

→ That means, multiply the coordinates of every point by 5

∴ D' = (8 × 5, 4 × 5)

∴ D' = (40, 20)

∴ E' = (2 × 5, 6 × 5)

∴ E' = (10, 30)

∴ F' = (3 × 5, 1 × 5)

∴ D' = (15, 5)

∴ The vertices of the image are D' (40, 20), E' (10, 30), F' (15, 5)

3 0

3 years ago

HELP ASAP<br> 1. 55% of 140 is<br> 2. 45% of 160 is<br> 3. 95% of 180 is

Vadim26 [7]

Answer:

1) 55 % of 140

55/100 × 140

11/20 × 140

11 × 7

2) 45 % of 160

45/100 × 160

45/5 × 8

9 × 8

3) 95% of 180

95/100 × 180

95/10 × 18

95 /5 × 4

19 × 4

3 0

4 years ago

Read 2 more answers

19. The marked price of an oven is 30% above its cost. In a sale, it is

yaroslaw [1]

a) Marked price: $884, Cost: $680

b) 2.5 %

Step-by-step explanation:

Let's call:

P = marked price of the oven

C = cost of the oven

We know that:

- The marked price of the oven is 30% above the cost, which means

$P=(1+\frac{30}{100})C=1.30C$ (1)

- In the sale, the oven is sold at a discount of 25% on its marked price; so the price of the sale is (we call it S)

$S=(1-\frac{25}{100})P=0.75P$ (2)

- We also know that the discount, which is the difference between the makerd price (P) and the discounted price (S) is

$P-S=\$221$ (3)

Substituting (2) into (3) we find marked price

$P-0.75P=\$221\\0.25P=\$221\\P=\frac{221}{0.25}=\$884$

Therefore, the cost of the oven is (from eq(1)):

$C=\frac{P}{1.30}=\frac{884}{1.30}=\$680$

The percentage loss in this situation is given by the difference between cost of the oven and the final price at which the oven is sold.

In this case, we have:

C = $680 (cost of the oven)

The discounted prices is S, and can be f ound using eq(3):

$S=P-221=884-221=\$663$

Therefore, the oven costs 680$ but it is sold at 663$.

Therefore, we can calculate the percentage loss using the equation:

$Loss=\frac{C-S}{C}\cdot 100 = \frac{680-663}{680}\cdot 100 =0.025\cdot 100 = 2.5\%$

So, a percentage loss of 2.5%.

4 0

3 years ago

Solve for x. X^2 = 1/4. Look at the picture for answer choices. Don't answer if you dont know.

allsm [11]

Answer:

x is equal to ± 1/2

Step-by-step explanation:

To find x, we simply need to take the square root of both sides:

x² = 1/4

√(x²) = √(1/4)

x = √(1/4)

x = ± 1/2

5 0

3 years ago

When you have two negatives in a linear equation you subtract?

Deffense [45]

Yes you would subtract but only if your subtracted it from a negetive

4 0

3 years ago