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3 years ago

Help!!!! I need to know this because I haven’t been paying attention in class

Mathematics

2 answers:

prisoha [69]3 years ago

5 0

Answer:

1:rational

2:rational or irrational

3:rational

4:irrational

Step-by-step explanation:

Yuki888 [10]3 years ago

3 0

Answer:

1:rational

2:rational or irrational

3:rational

4:irrational

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Which coordinate grid shows Point A at (0.50, −1.25)? (1 point)

polet [3.4K]

9514 1404 393

Answer:

(d) see below

Step-by-step explanation:

Since each grid square is 1/4 unit. the coordinates in terms of grid squares are ...

A(0.50, -1.25) ⇒ (0.50/.25, -1.25/.25) = (2, -5) . . . grid squares

Point A is located 2 squares right and 5 squares down on the grid. This matches choice D.

5 0

4 years ago

Read 2 more answers

Can someone please help me factor 6x^2 - 9x+42

frutty [35]

Answer:

3(2x^2-3x+14)

Step-by-step explanation:

6x^2-9x+42

All three terms have a common factor of 3

3(2x^2-3x+14)

Now let's focus on 2x^2-3x+14 and bring down the factor 3 later

so a=2

b=-3

c=14

Let's try to find two factors for ac that multiply to be a*c and add up to be b.

ac=28

b=-3

-----

ac=7(4)=14(2)=8(2)

Even if I made these pairs with both negatives nothing would give me -3

So you can only go as far as 3(2x^2-3x+14)

Here is another thing to help you if you have ax^2+bx+c and b^2-4ac<0 then it can't be factored (over reals)

6 0

3 years ago

Read 2 more answers

The bookstore at State University purchases from a vendor sweatshirts emblazoned with the school name and logo. The vendor sells

Sunny_sXe [5.5K]

Answer:

Check the explanation

Step-by-step explanation:

Kindly check the attached images below to see the step by step explanation to the question above.

4 0

3 years ago

A. 141<br> B. 138<br> C. 282<br> D. 69

aleksandrvk [35]

Answer:

Step-by-step explanation:

The measure of x is calculated as

x = 0.5( arc CD - arc BD)

= 0.5(210 - 72) = 0.5 × 138 = 69 → D

3 0

4 years ago

An object's temperature cools exponentially after it is removed from a furnace (hot oven). If its initial temperature is 730°C a

Sedbober [7]

Answer:

The object's temperature after 18 minutes is of 426ºC.

Step-by-step explanation:

The temperature after t minutes is modeled by an exponential function, which has the following format:

$T(t) = T(0)(1-r)^{t}$

In which T(0) is the initial temperature, and r is the cooling rate, as a decimal.

Its initial temperature is 730°C and it cools at a rate of 2.95% per minute

This means that $T(0) = 730, r = 0.0295$ . So

$T(t) = T(0)(1-r)^{t}$

$T(t) = 730(1-0.0295)^{t}$

$T(t) = 730(0.9705)^{t}$

Find the object's temperature after 18.0 minutes.

This is $T(18)$ . So

$T(t) = 730(0.9705)^{t}$

$T(18) = 730(0.9705)^{18} = 426$

The object's temperature after 18 minutes is of 426ºC.

5 0

3 years ago