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4 years ago

I would REALLY appreciate some help... :( Evaluate the expressions 7-9

Mathematics

1 answer:

Montano1993 [528]4 years ago

4 0

Answer:

7. 64

8. -100000

9. 729

Step-by-step explanation:

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What is the relationship between angle 1 and 2?

TiliK225 [7]

Answer:

Complementary

Step-by-step explanation:

Angle 1 and 2 make up a 90-degree angle

Hope this helps! :)

5 0

3 years ago

Find the discriminant of the following equation.<br> 4x2 + 16x + 16 = 0 ...?

Alexxandr [17]

To find the discriminant of the following equation you have to remember tha main formula : ax^2 +bx + c and the one for discriminant is <span>b^2 -4ac
So, now we can solve it </span> $16^2 -4(16)(4) = 4^2-4(4)$
$(4^2)^2 -4(4)(4)(4)-4^2 +4(4) = 0$
$4^4 - 4^4 = 0$ $16^2-4*4*16=0$ , so the discriminants is 0 :)
Hope it's clear!

8 0

3 years ago

Read 2 more answers

three miners esch dup up 3 diamonds. the weight of the diamonds were 5,13,12,4,9,8,15,210, and 6 ounces of a piece. each of jack

Nataliya [291]

The total weight of Nico's diamond is 564 ounces

<h3>Weights</h3>

The weights of the diamond are given as:

5, 13, 12, 4, 9, 8, 15, 210, and 6 ounces

<h3>Total weights</h3>

Start by calculating the total weights

$Total = 5+13+12+4+9+8+15+210+6$

$Total = 282$

The above sum represents the total weights of Jack's diamonds.

So, the total weights of Nico's diamond is calculated as:

$Nico = 2 \times 282$

$Nico = 564$

Hence, the total weight of Nico's diamond is 564 ounces

Read more about sum and addition at:

brainly.com/question/4344214

3 0

3 years ago

Pleaseeee help on question 3 and 5 pleaseeeee wuick thank youuuuuuuuu

elena55 [62]

Answer:

3a, 13cm 5, 1:200

Step-by-step explanation:

In the question 3 you just have to divide all of those numbers with that 5000, maybe also make them cm so it makes more sense. So 650m = 65000cm:5000= 13cm

then for the question 5, make the km to cm, so 4.2km would be 420000cm. Then you have to divide that 420000cm with the 21 cm, so 420000:21= 200. Then the scale should be 1:200

I had difficulties with these as well. If you need extra help with the task 3 please pm me :)

7 0

4 years ago

I have no idea how to answer this question I've tried everything look at the Picture

zlopas [31]

<u>Answer:</u>

a. the error is that he wrote 0.05 instead of 0.2

0.148835 ≈ 0.2

0.2 = 2 × 0.1

0.2 = 2 × 10⁻¹

The mass is about 2 × 10⁻¹ kg

8 0

3 years ago