All categories

2 years ago

Solve each equation

Mathematics

2 answers:

bagirrra123 [75]2 years ago

4 0

Answer:

Step-by-step explanation:

Hello!

- 11.5= a

b= -11 -7 = -18

c+3 = 15

c = 15 -3 = 12

-4d = 32

d = -32/4 = -8

MrRissso [65]2 years ago

4 0

Answer:

1 : a= 25.5

2 : b= -4

3 : c = 12

4: d = -8

Hopefully this is right !

You might be interested in

For a field trip, a bus company charges a flat fee plus an additional fee per student. for 25 students, the total cost is 132.50

pochemuha

The answer is y=5x+7.5

8 0

2 years ago

Read 2 more answers

I need help fast plzzzzz

PolarNik [594]

Answer:

Step-by-step explanation:

Find the vanilla first by dividing 420 by 7 and multiplying the quotient by 2 to get 120.

Then find the banana using the equation 35/100 = x/420, cross multiply to get 147.

Add 120 and 147 to get 267.

Subtract 267 from 420 to get 153.

Divide 153 by 9 to get 17.

Get the number of lemon cakes by multiplying 17 by 4.

The number of lemon cakes is 68!

(and chocolate cakes is 85)

4 0

2 years ago

What is the Lcm of 28 and 32

lesantik [10]

Answer:

The lcm of 28 is 4

The lcm for 32 is also 4

Step-by-step explanation:

6 0

3 years ago

Question 3 (1 point) Co-60 has a half life of 5.3 years. If a pellet that has been in storage for 26.5 years contains 14.5g of C

Zarrin [17]

Answer:

464 grams.

Step-by-step explanation:

Amount of substance:

The amount of substance after t years is given by an equation in the following format:

$A(t) = A(0)(1-r)^t$

In which A(0) is the initial amount and r is the decay rate, as a decimal.

Co-60 has a half life of 5.3 years.

This means that:

$A(5.3) = 0.5A(0)$

We use this to find r. So

$A(t) = A(0)(1-r)^t$

$0.5A(0) = A(0)(1-r)^{5.3}$

$(1-r)^{5.3} = 0.5$

$\sqrt[5.3]{(1-r)^{5.3}} = \sqrt[5.3]{0.5}$

$1 - r = 0.5^{\frac{1}{5.3}}$

$1 - r = 0.8774$

$A(t) = A(0)(0.8774)^{t}$

If a pellet that has been in storage for 26.5 years contains 14.5g of Co-60, how much of this radioisotope was present when the pellet was put in storage?

We have that $A(26.5) = 14.5$ , and use this to find A(0). So

$A(t) = A(0)(0.8774)^{t}$

$14.5 = A(0)(0.8774)^{26.5}$

$A(0) = \frac{14.5}{(0.8774)^{26.5}}$

[tex]A(0) = 464[tex]

464 grams.

3 0

2 years ago

30 POINTS!!!! EXPLAIN!

Reptile [31]

Answer:

f(x+2)=3x+10

Explanation:

f(x+2) means replace all the xs with (x+2)

f(x)=3x+4

f(x+2)=3(x+2)+4

Now simplify

f(x+2)=3x+6+4

f(x+2)=3x+10

7 0

3 years ago