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4 years ago

PLEASE HELP ASAPP 2²+10−3⋅2

Mathematics

2 answers:

ivanzaharov [21]4 years ago

5 0

Answer:

Step-by-step explanation:

Given

2² + 10 - 3 × 2 ← evaluate exponent and multiplication

= 4 + 10 - 6 ← evaluate from left to right

= 14 - 6

= 8

Juliette [100K]4 years ago

4 0

Answer:

Step-by-step explanation:

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Solve the logarithmic equation. y = log4 0.25 What does y equal?

Valentin [98]

$\bf \textit{exponential form of a logarithm} \\\\ log_a b=y \implies a^y= b\qquad\qquad a^y= b\implies log_a b=y \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ y=\log_4(0.25) ~\hfill 0.\underline{25}\implies \cfrac{025}{1\underline{00}}\implies \cfrac{1}{4}\implies 4^{-1} \\\\\\ y=\log_4\left( 4^{-1} \right)\implies 4^y=4^{-1}\implies y=-1$

7 0

3 years ago

Helpppp will give brainlist !!!!!!

BartSMP [9]

Answer:

8. The coordinates (0,0) represent the fact that when 0 minutes has passed, the horses have gone 0 miles because they hadn't started yet.

9. From the graph, it looks like horse A takes 4 minutes and horse B takes 2.5 minutes (aka 2 minutes and 30 seconds) to travel 1 mile.

10. For A: y = (1/4)x

For B: y = (2/5)x

11. For A: 3 miles

For B: (24/5) miles, or 4 and (4/5) miles.

12. Can't see the entire problem sorry.

Step-by-step explanation:

9. You find this by going to y=1 and look towards the right till you find the point the line intersects with y=1. Then find the x value by finding the corresponding number on the x axis.

10. A linear function will look something like this: y = mx+b, where y is the y value, x is the x value, m is the slope, and b is the y-intercept. Since both lines start from 0, you don't have to write the y-intercept since there's no point in writing +0. To find slope, you find delta y over delta x. Basically just find the difference of two y values and the difference of two x values from the same coordinate in the same order. I know that sounds really confusing but your teacher will probably teach this later on.

11. x represents the time, so just substitute x as 12 in the equation.

7 0

3 years ago

Please find it please

Sliva [168]

Answer:

Step-by-step explanation:

cross multiplication

8/5 = 1.6

6 0

2 years ago

Read 2 more answers

An = a1 + (n - 1)d

yarga [219]

Answer:

The car will travel 1980 meters in 15 minutes.

Hence, option 'D' is true.

Step-by-step explanation:

Given that a car travels 300 meters in the first minute, so

a₁ = 300

Each minute after, the car travels 120 meters. , so the sequence becomes

a₁, a₂, a₃, a₄, a₅, ...

300, 420, 540, 660, 780, ...

An arithmetic sequence has a constant difference 'd' and is defined by

$a_n=a_1+\left(n-1\right)d$

computing the differences of all the adjacent terms

$20-300=120,\:\quad \:540-420=120,\:\quad \:660-540=120,\:\quad \:780-660=120$

The difference between all the adjacent terms is the same and equal to $d=120$

now, we have

a₁ = 300

d = 120

so substituting a₁ = 300 and d = 120 in the nth term of the sequence

$a_n=a_1+\left(n-1\right)d$

$a_n=120\left(n-1\right)+300$

$a_n=120n+180$

Thus, the nth term of the sequence is:

$a_n=120n+180$

Determining the distance the car travels in 15 minutes

As we have already determined the nth term of the sequence such as

$a_n=120n+180$

now substituting n = 15

$a_{15}=120\left(15\right)+180$

$a_{15}=1800+180$

$a_{15}=1980$

Therefore, the car will travel 1980 meters in 15 minutes.

Hence, option 'D' is true.

6 0

3 years ago

Titus works at a hotel. Part of his job is to keep the complimentary pitcher of water at least half full and always with ice. Wh

Nastasia [14]

The number of minutes that would make the water level be less than or equal to 64 cups is;

160 minutes.

We are given the equation;

W = -0.414t + 129.549

where;

t is the number of minutes

W is the level of water

The expression to find the amount of time it will take for the water level be less than or equal to 64 cups is;

-0.414t + 129.549 ≤ 64

Using substitution property of equality, subtract 129.549 from both sides to get;

-0.414t + 129.549 - 129.549 ≤ 64 - 129.549

-0.414t ≤ -65.549

Using division property of equality, divide both sides by -0.414 to get;

t ≤ -65.549/-0.414

t ≥ 158.33

(sign changed to ≥ because we divided the inequality by a negative number.)

We have to approximate the inequality to get;

t = 160 minutes.

Read more about Inequalities at; brainly.com/question/1310267

5 0

3 years ago