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joja [24]
3 years ago
14

Which products are negative?

Mathematics
1 answer:
vovikov84 [41]3 years ago
8 0
A product is negative when the number of negative numbers in the multiples is odd.
Therefore, options B and D gives negative products.
You might be interested in
A muffin recipe calls for 2/5 tablespoons of vanilla extract for 6 muffins. Arthur is making 18 muffins. How much vanilla extrac
GuDViN [60]
2/5 tablespoons of vanilla extract ... 6 muffins
x tablespoons of vanilla extract = ? ... 18 muffins

If you would like to know how much vanilla extract does he need, you can calculate this using the following steps:

x * 6 = 18 * 2/5
x * 6 = 36/5    /6
x = 36/5 / 6
x = 6/5 = 1 1/5

Result: Arthur will need 1 1/5 tablespoons of vanilla extract for 18 muffins.
7 0
3 years ago
What is the exact value of cos (67.5° )?
Brilliant_brown [7]

Answer:

0.38268343

Step-by-step explanation:

cos( 67.5 )

Rewrite  

67.5

as an angle where the values of the six trigonometric functions are known divided by  2 . cos ( 135\ 2)

Apply the cosine half-angle identity.

±

√

1

+

cos

(

135

)

2

 

Change the  

±

to  

+

because cosine is positive in the first quadrant.

√

1

+

cos

(

135

)

2

Simplify  

√

1

+

cos

(

135

)

2

√

2

−

√

2

2

The result can be shown in multiple forms.

Exact Form:

√

2

−

√

2

2

Decimal Form:

0.38268343

…

6 0
3 years ago
Shobos mother present age is six times shobos present age. Shobos age five from now will be one third of his mother's present ag
r-ruslan [8.4K]

Answer:

Step-by-step explanation:

From the problem statement, we can setup the following equations:

M = 6S

S + 5 = \frac{1}{3}M

where S is the current age of Shobos and M is the current age of his mother.

Substituting the first equation into the second will allow us to solve for S:

S + 5 = \frac{1}{3}M

S + 5 = \frac{1}{3}(6S)

S + 5 = 2S

S = 5

Substituting this value into the first equation gives us the age of the mother:

M = 6S

M = 6(5)

M = 30

5 0
3 years ago
Read 2 more answers
Express your answer in scientific notation. 1.4 x 10^9 - 8.6 x 10^8
garik1379 [7]

Answer:

-7.5 x 10^1

Step-by-step explanation:

subtract numbers and exponents and make sure that number is between 1 and 10.

4 0
2 years ago
Solve by substitution or elimination 5x+3y=-15 -8x-2y=10
Cerrena [4.2K]

Answer:

x=0, y=-5

Step-by-step explanation:

The system is

(1)  5x+3y=-15  

(2) -8x-2y=10

Let's solve it by elimination.  In order to do it, you have to multiply the equations by suitable numbers in such a way that when you add the 2 equations, one of the unknowns is eliminated

Multiply (1) by 2 and (2) by 3

(1) 10x+6y=-30

(2) -24x-6y=30

Add the two equations

10x-24x+6y-6y=-30+30 ----> -14x=0---->x=0

Now replace this value in any equation, for example in (1)

6y=-30 ----> y=-30/6----> y=-5

5 0
3 years ago
Read 2 more answers
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