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2 years ago

Find the slope of the line through each pair of points. Show work please (7,9), (-2, 19)

Mathematics

2 answers:

il63 [147K]2 years ago

7 0

Answer:

7x9=63 - 2x19=38

Step-by-step explanation:

Crazy boy [7]2 years ago

6 0

Answer:

m = - 10/9

Step-by-step explanation:

(7,9) and (- 2,19)

(19-9)/(- 2-7)

= -10/9

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If ex + e*-1= 2, then x =..

lianna [129]

Note: Your equation seems a little unclear. But, I am assuming that your equation is:

$e^x\:+\:e^{-1}=\:2$

Because my solution would still clear your concept about this topic, no matter what the question is.

Answer:

Please check the explanation.

Step-by-step explanation:

Given the equation

$e^x\:+\:e^{-1}=\:2$

subtract $e^{-1}$ from both sides

$e^x+e^{-1}-e^{-1}=2-e^{-1}$

$e^x=2-\frac{1}{e}$

$\ln \left(e^x\right)\:=\ln \:\left(2-\frac{1}{e}\right)$

$\:x\cdot ln\left(e\right)=\ln \:\:\left(2-\frac{1}{e}\right)$

$\:x\cdot 1=\ln \:\left(2-\frac{1}{e}\right)$ ∵ $\:\:\ln \left(e\right)=1$

$x=\ln \:\left(2-\frac{1}{e}\right)$

$x=0.5$

8 0

2 years ago

375 of the students at Haldane Elementary School walk to school. If these

qaws [65]

478.75 because it’s right

7 0

2 years ago

Jose bought 4.75 pounds of pecans at $5.80 per pound. how much did jose pay for the pecans

butalik [34]

Answer:

27.55

Step-by-step explanation:

4.75 times 5.80 is 27.55

Hope it helps!

8 0

2 years ago

The biomass B(t) of a fishery is the total mass of the members of the fish population at time t. It is the product of the number

LenKa [72]

Answer:

174.8 guppies.g/week

Step-by-step explanation:

B(t) = N(t)M(t)

Utilizing the product rule of derivative

$\frac{d(AH)}{dt} = A\frac{dH}{dt} + H\frac{dA}{dt}$

Applying the rule to B(t) = N(t)M(t)

$\frac{d(B(t))}{dt} = N(t)\frac{d(M(t))}{dt} + M(t)\frac{d(N(t))}{dt}$

from the question

t=4 weeks, N(4) = 820 guppies

d(N(4))/dt = 50 guppies/week

m(4) = 1.2g

d(M(4))/dt = 0.14g/week

$\frac{d(B(t))}{dt} = N(t)\frac{d(M(t))}{dt} + M(t)\frac{d(N(t))}{dt}\\\\= 820(0.14) + 50 (1.2) = 174.8 guppies.g/week$

4 0

2 years ago

Suppose you have a jar with 14 red marbles and 26 black marbles. You randomly select a marble from the jar without replacement.

ladessa [460]

Alright well if you pulled out a blue marble on the second go then you can make the connection that you had originally pulled out a black marble on the first go.

so the probability of pulling out a blue marble on the second go is 13/52

"13" is the original number of blue marbles added after selecting the black marble
"52" is me simply add up all the marble in the bag..the 14 red marbles, 26 black marbles minus the 1 pulled out and not replaced so now its 25 and the 13 blue marbles added last.

4 0

3 years ago