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Ann [662]
3 years ago
7

Evaluate the expression -2b+x when b=3 and x=-4

Mathematics
2 answers:
earnstyle [38]3 years ago
6 0

Answer:

-10 is the answer

Step-by-step explanation:

first things that you will replace each number in:

-2x3+(-4)=-10

Kryger [21]3 years ago
3 0

Answer:

the answer to the question is -10

Step-by-step explanation:

substitute the given into the question

-2(3)+(-4)

then open the parentheses/multiply

-6-4

then subtract them

-10

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What the measure of a interior angle of a six sided figure
Sergio [31]

Answer:

120 degrees.

Step-by-step explanation:

If it is a regular 6 sided figure then each interior angle is 180 - (360/6)

= 120 DEGREES.

7 0
3 years ago
You a Miguel Cervantes de Navas y Colon, captain in the Royal Spanish Army in Seville in the year 1842. Outside your barracks wi
djverab [1.8K]

<u>650 cannonballs </u>

Explanation step by step:

upper layer = 1 ^ 2

second layer = 2 ^ 2

third layer = 3 ^ 2

layer 12 is 12 ^ 2

<u>The formula is: </u>

<u>n * (n + 1) * (2n + 1) / 6 </u>

<u>n = 12 </u>

<u>12 (12 + 1) (2 * 12 + 1) / 6 </u>

<u>12 * 13 * 25/6 = </u>

<u>650 </u>

<u> </u>

There are 650 cannonballs in this pyramid.

5 0
3 years ago
Read 2 more answers
What is the value of X? Enter answer as a decimal...
lozanna [386]

Answer:

37.89051724=x

Step-by-step explanation:

We can use similar triangles and proportions to solve.  Put the same side of the small triangle over the large triangle.

MA         MB

------- = ----------

MN         MP

80.5 -35         x

------------- = ----------

70.5               96.6 -x

Simplifying

45.5             x

------------- = ----------

70.5               96.6 -x

Using cross products

45.5 (96.6-x) = 70.5x

Distribute

4395.3 - 45.5 x = 70.5x

Add 45.5x to each side

4395.3 - 45.5 x+45.5x = 70.5x+45.5x

4395.3 = 116x

Divide each side by 116

4395.3/116 = 116x/116

37.89051724=x

6 0
3 years ago
Erik is performing a marble experiment in math class. His teacher places an equal number of black, red, and white marbles in a b
olganol [36]

Answer:

1/3

Step-by-step explanation:

5 0
2 years ago
Write an equation of a line in point-slope, slope-intercept, and standard form that has
Inga [223]

Answer:

(a) y + 4x - 14 = 0

(b) y = -4x + 14

(c) y + 4x = 14

Step-by-step explanation:

The formula for calculating the equation of line in point - slope form is given as :

y-y_{1}  = m(x-x_{1} )

where m is the slope

Given from the question :

m = - 4

x_{1} = 2

y_{1} = 6

Substituting into the formula , we have :

y - 6 = - 4(x - 2)

y - 6 = -4x + 8

y + 4x - 6 - 8 = 0

y + 4x - 14 = 0

Therefore :

(a) the equation of the line in point - slope form is y + 4x - 14 = 0

(b) to write it in slope - intercept form , we will make y the subject of the formula , which will give : y = -4x + 14

(c) the equation of line in standard form is ; y + 4x = 14

5 0
3 years ago
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