All categories

3 years ago

Solve this for 25 points needed really soon. Solve -2 t + 5 ≥ -7.

Mathematics

2 answers:

Orlov [11]3 years ago

6 0

Answer:

t < 6

Step-by-step explanation:

-2t > -12 divide by -2 to get

lisabon 2012 [21]3 years ago

3 0

$- 2t \geqslant - 7 - 5$

$- 2t \geqslant - 12$

$2t \geqslant 12$

$t \geqslant 12 \div 2$

$t \geqslant 6$

You might be interested in

A homeowner wishes to put a fence around a space in her yard to create a dog pen. The space that she wants to fence in is shown

klasskru [66]

Answer: the answer is C 52

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The half-life of carbon-14 is 5,730 years. Assuming you start with 100% of carbon-14, what is the expression for the percent, P(

vodomira [7]

The general expression would be:
$P(t) = (\frac{1}{2})^{ \frac{t}{5730} }$
In an organism that is 20,000 years old (t = 20000), we would expect:
$P(t) = (\frac{1}{2} )^( \frac{20000}{5730} ) = 0.08898$
This menas there would be around 8.898% of carbon-14 remaining in the organism.

8 0

3 years ago

2 cards are chosen from a deck of cards. The first card is replaced before choosing the second card. What is the probability tha

fgiga [73]

Answer:

The probability that the first card chosen is club and second card chosen is of heart is .

Step-by-step explanation:

Total number of cards in the deck is 52 (total number of cases).

Probability of an event E can be formulated as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

For event A, number of cards of type club = 13 (favorable cases)

So,

$P(A) = \dfrac{13}{52} \\\Rightarrow P(A) = \dfrac{1}{4}$

For event B, number of cards of type heart = 13 (favorable cases)

So,

$P(B) = \dfrac{13}{52} \\\Rightarrow P(B) = \dfrac{1}{4}$

It is given that card is replaced before choosing the second card.

These events A and B are independent events, happening of one event does not effect the happening of other. And probability of both happening together can be found as following:

$P(A \cap B) = P(A) \times P(B)$

$\Rightarrow P(A \cap B) = \dfrac{1}{4} \times \dfrac{1}{4}\\\Rightarrow P(A \cap B) = \dfrac{1}{16}$

The probability that the first card chosen is club and second card chosen is of heart is $\frac{1}{16}$ .

8 0

3 years ago

Solve for m: 8(m+5)=16 ?

Alika [10]

8(m+5)=16
8m+40=16
8m=24
m=3

8 0

3 years ago

Read 2 more answers

Which expression is equivalent to

ozzi

The answer for the question shown above is the first option: x^2(x^2)^1/4
When you simplify the expression, you obtain the equivalent expression:

(x^10)^1/4
[(x^8)(x2)]^1/4
x^2(x^2)^1/4

Therefore, the asnwer is the option mentioned before.

5 0

4 years ago

Read 2 more answers