3 years ago

I need help with this , 15-17

Mathematics

1 answer:

vladimir1956 [14]3 years ago

4 0

Answer:

-2

Step-by-step explanation:

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A store gets 50% of its items from factory 1, 30% from factory 2, and 20% from factory 3 • 2% of factory 1’s items are defective

lana66690 [7]

= Factory 2,3
Hope this helps

3 0

3 years ago

Need help with these two math questions

MaRussiya [10]

√3 x √5 = √15

7√15 - 2√15 = answer 5√15

simple

6² = 36

7² = 49

8² = 64

√64

8 0

3 years ago

What are the solutions of the quadratic equation (x + 3)(x +3) = 49? Ax = -2 and x = -16 Bx = 2 and x = -10 Cx = 4 and x = -10 D

Ivahew [28]

Answer:

4 and -10

Step-by-step explanation:

$\displaystyle (x + 3)(x +3) = 49 \\ x^2+3x+3x+9=49 \\ x^2 +6x+9=49 \\ x^2 + 6x + 9 - 49 = 0 \\x^2+6x-40=0 \\\\ \Delta=b^2-4ac \\ \Delta=6^2-4 \cdot 1 \cdot (-40) \\ \Delta=36+160 \\ \Delta=196 \\ \\ X_{1,2}=\frac{-b \pm \sqrt{\Delta} }{2a} \\ \\ X_1=\frac{-b+\sqrt{\Delta} }{2a} = \frac{-6+14}{2} = \frac{8}{2}=4 \\ \\ X_2=\frac{-b-\sqrt{\Delta} }{2a} = \frac{-6-14}{2}=\frac{-20}{2} = -10$

4 0

3 years ago

The blue dot is at what value on the number line

professor190 [17]

It is at 1 because each space represents 2 units.

-3+(2×2)=1

It is at the point 1.

5 0

3 years ago

Find the area of the rhombus.<br> A=<br> square units

mylen [45]

Answer: A=70 square units

Step-by-step explanation:

The area of a triangle can be found using the formula $A=\frac{1}{2} bh$

Let 5=h and 7=b

Plug in the values and solve

$A=\frac{1}{2} (7)(5)$

$A=17.5$

However, since four of these triangles make up this rhombus, we can multiply the area of one of these triangles by four to find the area of the whole rhombus.

$A=17.5*4$

$A=70$

8 0

3 years ago