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Snezhnost [94]
3 years ago
14

a repairman purchased several furnace-blower motors for a total cost of $280 of his cost per motor has been $5 less, he could ha

ve purchased 1 additional motor. how many motors did he buy at the regular date?
Mathematics
1 answer:
nika2105 [10]3 years ago
4 0

Answer:

It would be 550 because 280 - 5 = 275 and if he buys a new 1 it would cost the same and you add both

Step-by-step explanation:

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Que son las aristas
Alchen [17]

Answer:

Dónde está

Step-by-step explanation:

6 0
2 years ago
 How much fencing is required to enclose a circular garden whose radius is 22 ​m? Use 3.14 for pie
galina1969 [7]

Answer:

138.16 m

Step-by-step explanation:

Circumference=2πr

r=22

C=2·3.14·22

C=138.16


3 0
3 years ago
3. if kx² + 2x + k = -kx have equal roots, find the values of k.<br>​
crimeas [40]

Answer:

k = - \frac{2}{3} , k = 2

Step-by-step explanation:

Using the discriminant Δ = b² - 4ac

The condition for equal roots is b² - 4ac = 0

Given

kx² + 2x + k = - kx ( add kx to both sides )

kx² + 2x + kx + k = 0 , that is

kx² + (2 + k)x + k = 0 ← in standard form

with a = k, b = 2 + k and c = k , thus

(2 + k)² - 4k² = 0 ← expand and simplify left side

4 + 4k + k² - 4k² = 0

- 3k² + 4k + 4 = 0 ( multiply through by - 1 )

3k² - 4k - 4 = 0 ← in standard form

(3k + 2)(k - 2) = 0 ← in factored form

Equate each factor to zero and solve for k

3k + 2 = 0 ⇒ 3k = - 2 ⇒ k = - \frac{2}{3}

k - 2 = 0 ⇒ k = 2

5 0
3 years ago
The following polygons are similar. Find x
Ray Of Light [21]

is 750.000 is your answer.

5 0
2 years ago
Solution of y - x &lt; -3
devlian [24]

Answer:

Step-by-step explanation:

The inequality y - x < -3 should be solved for y, as follows:

Add x to both sides, obtaining:

y  <  x - 3

Note that this y  <  x - 3 has the form y = mx + b, which represents a straight line.  In this case the straight line would be y = x - 3, meaning that the slope of this line is 1 and the y-intercept is -3.

Because y  <  x - 3  involves the inequality symbol <, draw a dashed line, not a solid line.   The solution set consists of all points on the graph BELOW this dashed line y  <  x - 3.

8 0
3 years ago
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