All categories

2 years ago

I need help w this it’s gonna count as a test grade

Mathematics

2 answers:

Damm [24]2 years ago

8 0

The answer is C x>-2

Tanya [424]2 years ago

6 0

Answer:

Step-by-step explanation:

< open circle, not ≤

You might be interested in

Savanna has 5 dogs and feed them 6 oz of dog food each day, how many pounds of dog food do they eat each day

oksian1 [2.3K]

Answer:

30 oz of dog food

Step-by-step explanation:

you want to multiply the number 6 over the number of dogs there are and there are 5 so that is 5•6 which =30

6 0

3 years ago

The sequence$$1,2,1,2,2,1,2,2,2,1,2,2,2,2,1,2,2,2,2,2,1,2,\dots$$consists of $1$'s separated by blocks of $2$'s with $n$ $2$'s i

kicyunya [14]

Consider the lengths of consecutive 1-2 blocks.

block 1 - 1, 2 - length 2

block 2 - 1, 2, 2 - length 3

block 3 - 1, 2, 2, 2 - length 4

block 4 - 1, 2, 2, 2, 2 - length 5

and so on.

Recall the formula for the sum of consecutive positive integers,

$\displaystyle \sum_{i=1}^j i = 1 + 2 + 3 + \cdots + j = \frac{j(j+1)}2 \implies \sum_{i=2}^j = \frac{j(j+1) - 2}2$

Now,

$1234 = \dfrac{j(j+1)-2}2 \implies 2470 = j(j+1) \implies j\approx49.2016$

which means that the 1234th term in the sequence occurs somewhere about 1/5 of the way through the 49th 1-2 block.

In the first 48 blocks, the sequence contains 48 copies of 1 and 1 + 2 + 3 + ... + 47 copies of 2, hence they make up a total of

$\displaystyle \sum_{i=1}^48 1 + \sum_{i=1}^{48} i = 48+\frac{48(48+1)}2 = 1224$

numbers, and their sum is

$\displaystyle \sum_{i=1}^{48} 1 + \sum_{i=1}^{48} 2i = 48 + 48(48+1) = 48\times50 = 2400$

This leaves us with the contribution of the first 10 terms in the 49th block, which consist of one 1 and nine 2s with a sum of $1+9\times2=19$ .

So, the sum of the first 1234 terms in the sequence is 2419.

8 0

1 year ago

You make and sell triangular flags. Each flag has a base of 3.5 feet and a height of 2.5 feet. Fabric for the flags costs $0.40

AlexFokin [52]

Answer:

Square feet refer to the area of the triangle. Using the area formula (1/2bh), the area is calculated to be 4.375 square feet. If each square foot costs $.40 to make, then the correct process is to multiply 4.375 by .40, making the correct answer $1.75.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

If the ratio of the measure of the complement of an angle to the measure of its supplement is 1:3, find the measure of the angle

prohojiy [21]

Set up and solve an equation:

3(90-x) = (180-x). Then 270 - 3x = 180 - x, or 270 - 180 = 2x.
90 = 2x, so x = 45 deg.

Is this true? 3(90-45) = (180-45)? If so, x = 45 degrees is correct.

3 0

3 years ago

People use water to cook, clean, and drink every day. An estimate of 19.4% of the water used each day is for drinking. If a fa

Ronch [10]

Answer:

86.7 gallons

Step-by-step explanation:

I literally went decimal by decimal to find it. So theres no way it's wrong

4 0

3 years ago