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2 years ago

I NEED HELP PLEASE!!

Mathematics

2 answers:

Nimfa-mama [501]2 years ago

7 0

Answer:

f=15

Step-by-step explanation:

set 2.5 over 1 to make it a fraction and cross multiply

nadya68 [22]2 years ago

3 0

Yea it’s correct f=15

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What are the coordinates of the midpoint of the line segment with endpoints J(−6, 3) and K(4, −2) ?

frutty [35]

M = ( (-6+4)/2, (3+-2)/2 )

M = (-1, 1/2)

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2 years ago

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If x^3 times x^b equals x^15, which could be a correct value for "b?"

crimeas [40]

B=5
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4 0

3 years ago

The half-life of cesium-137 is 30 years. Suppose we have a

VMariaS [17]

(a) If $y(t)$ is the mass (in mg) remaining after $t$ years, then $y(t) = y(0) e^{kt}=100e^{kt}.$

$y(30) = 100 e^{30k} = \frac{1}{2}(100) \implies e^{30k} = \frac{1}{2} \implies k = -(\ln 2) /30 \implies \\ \\
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(b) $y(100) = 100 \cdot 2^{-100/30} \approx \text{9.92 mg}$

(c)
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t = -30 \frac{\ln 0.01}{\ln 2} \approx \text{199.3 years}$

3 0

3 years ago

The multiplicative inverse of (-4)⁻² is (4)⁻². True False

timofeeve [1]

Answer: false

Step-by-step explanation:

The exponents would have to have a different sign from each other (positive or negative), not the integer.

3 0

3 years ago

Slope = 2; (-1,4)<br><br> Gghhhgggggghgehwjwjwjwjwjwjw

krok68 [10]

The slope intercept form is given as y = 2x + 6

The general expression for slope intercept form is given as:

y = mx + c

where, m = slope

c = intercept

The formula for slope intercept form when we have been given the coordinates of a point and slope is given as :

$(y-y_{1}) = m(x-x_{1})$ (1)

where ( $x_{1} , y_{1})$ = the coordinates of a point

m = slope of the line

putting the required values in equation (1) we get

(y - 4) = 2(x- (-1))

(y - 4) = 2(x+1) [As (-)*(-) = +]

y - 4 = 2x + 2

y = 2x + 2 + 4

y = 2x + 6

Thus the slope intercept form is y = 2x + 6

Learn more about slope intercept form here : brainly.com/question/19440459

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11 months ago