All categories

3 years ago

After substituting, what is the first step when evaluating x + 3 x minus 4.2 when x = 5?

Mathematics

2 answers:

Step2247 [10]3 years ago

7 0

Answer:

Adding and subtracting :D

Step-by-step explanation:

okay so after plugging in your x you should have an equation that looks like this:

5+15-4.2

because (x=5)+(3*5)- 4.2

so then you start adding and subtracting:

(5+15)-4.2

20-4.2

15.8

Hope this helps :D

adoni [48]3 years ago

6 0

Answer:

Step-by-step explanation:

x + 3x - 4.2....when x = 5

so we sub

5 + 3(5) - 4.2

I would then multiply the 3 and the 5

5 + 15 - 4.2

then I would add

20 - 4.2

then subtract

15.8

You might be interested in

Which property is shown?

melisa1 [442]

We are given a tasked to find the geometric property of a triangle that satisfies the given conditionm∠abc=m∠cbd, then m∠cbd=m∠abc.

It can be observed that if the first value is equal to the second value then the second value is also equal to the first value. This kind of characteristics describes the Symmetric Property.

3 0

3 years ago

Read 2 more answers

To create an image, Figure D is going to be reflected across the y-axis, rotated 180° around the point indicated in the figure,

uranmaximum [27]

The image and pre-image are congruent

8 0

3 years ago

To find the area of a triangle, you can use the expression b times h divided by 2, where b is the base of the triangle and h is

vladimir1956 [14]

Answer:

16 sq. units

Step-by-step explanation:

The formula for the area of a triangle:

A = 1/2bh

If base and height are known as:

b = 8 units and h = 4 units

Then the area is:

A = 1/2*8*4 = 16 sq. units

4 0

3 years ago

Given sin300°, which of the following is an equivalent expression ?

DENIUS [597]

Answer:sin240

Step-by-step explanation:

Sin300=(-√3)/2

Sin240=(-√3)/2

So sin300 is equivalent to sin240

8 0

3 years ago

There are two similar packages. The ratio of the volumes is 8:125. Determine the dimensions of the bigger package. The dimension

GREYUIT [131]

Step-by-step explanation:

since packages are similarsimilar packages. The ratio of the volumes is 8:125. Determine the dimensions of the bigger package. The dimensions of the smaller package are... Height= 45cm, Length= 80cm, and Width= 25cm.

Length of bigger package = 80×125/8=1250cm

Width of bigger package =25×125/8=390.625cm

Height of bigger package =45×125/8=703.125cm

4 0

2 years ago