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2 years ago

Whats ur name, and idk if it will let me but i made it 72 points

Mathematics

2 answers:

Aloiza [94]2 years ago

6 0

Answer:

my name is Emma ^-^

Step-by-step explanation:

valkas [14]2 years ago

5 0

Answer:

my name Alfa

ok ...(っ.❛ ᴗ ❛.)っ

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An earthquake wave travels through 55 km of rock in 25 seconds . Which equation represents the relationship between t, the numbe

ira [324]

Answer:

2.2 m/s

Step-by-step explanation:

Step one

Given data

An earthquake wave travels through 55 km

hence distance = 55 km

time taken = 25 seconds

Required

the expression relating t and d

Step two:

we know that velocity is

Speed= distance/time

speed= 55/25

Speed= 2.2 m/s

6 0

2 years ago

The graph of f (0) = -4 cos 0 is shown below. The range of this function is

Anika [276]

Answer:

-4 ≤ f ( $\theta$ ) ≤ 4

Step-by-step explanation:

The range of a function is the allowed y-values of the function.

We can simply look at the periodic function below and see that the y-value ranges from a negative 4 to a positive 4. It oscillates betwen -4 and 4. That is the range.

We can say -4 ≤ f ( $\theta$ ) ≤ 4

Last answer choice is right.

*** NOTE: it is a type, not "0", rather " $\theta$ "

5 0

2 years ago

PLEASE HELP I NEED TI GO TO BED AND ITS 12 am! Select the ordered pairs that are solutions to the inequality 2x-3y greater than

max2010maxim [7]

(8,1);((-2,-6)

2•8-3•1>=12
16-3>=12
13>=12

2•(-2)-3(-6)>=12
-4+18>=12
14>=12

5 0

2 years ago

Read 2 more answers

Which of the five measures of center (the mean, the median, the trimmed mean, the weighted mean, and the mode) can be calculated

nalin [4]

The mean and median can be calculated for quantitative data only.

4 0

2 years ago

7x + 8y = 25 9x + 10y =35 elimination method please

djverab [1.8K]

$7x +8y = 25 ~~~....(i)\\\\9x +10y = 35~~~ ....(ii)\\\\\text{Multiply equation (ii) by}~ \dfrac 79 ~ \text{and do (ii) - (i):}\\\\\dfrac 79 (9x +10y) - (7x +8y) = \dfrac 79 (35) - 25\\\\\\\implies 7x +\dfrac{70y}9 - 7x -8y = \dfrac{245}9 -25\\\\\\\implies - \dfrac{2y}9 = \dfrac{20}9\\\\\\\implies -2y =20\\\\\implies y =-10\\\\\text{Substitute}~ y = -10~ \text{in equation (i):}\\\\\\7x +8(-10) = 25\\\\\implies 7x = 25 +80\\\\\implies 7x = 105 \\\\\implies x =15\\\\$

$\\\text{Hence}~ (x,y) = (15,-10)$

3 0

1 year ago