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4 years ago

Can someone help with number 5??

Mathematics

1 answer:

maria [59]4 years ago

3 0

The correct answer is C

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Identify the coordinates of P(–5, 7) after a rotation of 180° about the origin. a. P’ = (5, 7) c. P’ = (5, –7) b. P’ = (–5, –7)

ycow [4]

It's
<span>c. P’ = (5, –7)
(both coordinate signs get flipped)
</span>

3 0

4 years ago

Building a 200 foot-long bridge across Scorpion Gulch, where the water is 8 feet deep, costs $700,000. Assume that the cost vari

Serhud [2]

Step-by-step explanation:

BE SURE TO READ THROUGH.

Represent cost with C, length of bridge with L and depth of water with D.

& represents directly varies as

; C & L

; C & D²

therefore C & LD²

; C = kLD².......k is a constant

700,000 = k × 200 × 8²

700,000 = k × 200 × 64

700,000 = 12800k

700,000 / 12800 = k

54.6875 = k

The relationship therefore is C = 54.6875 × LD²

What are we then to do??

6 0

4 years ago

What is the factorization of 3x2 – 8x + 5

son4ous [18]

It is (3x - 5)(x - 1)

5 0

3 years ago

Read 2 more answers

Josh created a pattern by using tiles. Twenty tiles were blue. For the rest of the pattern he used equal numbers of red white ti

Ber [7]

Answer: The number of red tiles = 15.

Step-by-step explanation:

Let the number of red tiles be x, and the total tiles be y.

Since, the pattern he used equal numbers of red white tiles, therefore the number of white tiles = x

The number of blue tiles = 20

Forty percent of the pattern was made of blue tiles and 40%=0.40

Therefore,

$0.40y=20\\\Rightarrow\ y=\frac{20}{0.4}\\\Rightarrow\ y=50$

Now, the total number of tiles = $x+x+20=50$

$\Rightarrow\ 2x=50-20\\\Rigjhtarrow\ x=30\\\Rightarrow\ x=15$

The number of red tiles = 15.

3 0

3 years ago

A die is loaded in such a way that an even number is twice as likely to occur as an odd number. If E is the event that a number

elena55 [62]

Answer:

$\frac{4}{9}$

Step-by-step explanation:

Let the probability of an even number occurring be p and that of odd be q. From the question, p = 2q.

Now, p and q are mutually exclusive events. Hence,

p + q = 1

2q + q = 1

3q = 1

q = 1/3

p = 2q = 2/3

There are 3 odd numbers and 3 even numbers on a die. The probability of each even number is p/3 = 2/9 and the probability of each odd number is q/3 = 1/9.

The event E is the event of a 3, 2 or 1 appearing. Here, we have two odd numbers and 1 even number.

$P(E) = 2\times\frac{1}{9} + 1\times\frac{2}{9} = \frac{4}{9}$

5 0

3 years ago

Read 2 more answers