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Lina20 [59]
3 years ago
13

Steps

Mathematics
1 answer:
slamgirl [31]3 years ago
5 0

Answer:

step 2

Step-by-step explanation:

Given

(2x - 3)(5x² - 2x + 7)

2x(5x² - 2x + 7) = 10x³ - 4x² + 14x ← step 1 is correct

- 3(5x² - 2x + 7) = - 15x² + 6x - 21 ← step 2 in her working is incorrect

Adding the results from step 1 and step 2

10x³ - 4x² + 14x - 15x² + 6x - 21 ← collect like terms

= 10x³ - 19x² + 20x - 21

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Find the value of the length x rounded to 1 DP.
borishaifa [10]

Answer:

24

Step-by-step explanation:

29+8+90=127

180-127=53

23.95

or 24

Give brainliest pls

3 0
3 years ago
If $380 is invested for one year at 13% simple interest, how much interest is earned?
pashok25 [27]

Answer: $49.4

Step-by-step explanation:

Simple interest is calculated thus:

Principal × Rate × Time

Principal= $380

Rate= 13%= 13/100=

Time= 1

Therefore interest earned =380× 0.13×1

=$49.4

7 0
3 years ago
Does anybody have any tips for remembering this customary capacity so I don't always have to look agh this chart?
TiliK225 [7]
I suggest reading them over and over again to remember them. I know it sounds annoying, but trust me, it'll pay off.
6 0
3 years ago
Read 2 more answers
0.4(5x – 12) + 0.5x = 15.2
kvasek [131]

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em> </em><em>⤴</em>

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3 0
3 years ago
Read 2 more answers
Help!<br> What would d be?
Oxana [17]

Answer:

d = 17.5499287748 inches or 17.5 inches to 1 decimal place

Step-by-step explanation:

find the diagonal line passing through the middle of the bottom rectangle:

a² + b² = c²

10² + 8² = c²

100 + 64 = 164

c² = 164

c = √164

c = 12.8062484729

find d:

a² + b² = c²

12² + 12.80624847298² = c²

144+ 164 = 308

c² = 308

c = √308

c = 17.5499287748

therefore d = 17.5499287748 inches or 17.5 inches to 1 decimal place

6 0
4 years ago
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